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    6.9
    Medium

    CVE-2026-42604

    Last Modified: 15 Jun 2026

    Actual is a local-first personal finance tool. The `POST /openid/config` endpoint in Actual Budget's sync-server versions <= 26.4.0 exposes the full OpenID Connect configuration—including the OAuth2 `client_secret`—to any caller who knows the bootstrap password. The endpoint also lacks authentication and rate limiting, making the bootstrap password brute-forceable. Version 26.5.0 fixes the issue.

    Published: 12 Jun 2026
    6.9
    Medium

    CVE-2026-53726

    Last Modified: 12 Jun 2026

    Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.80 and 9.9.1-alpha.6, a relation query using the $relatedTo operator could read the membership of a Relation field even when that field was hidden from the requesting client by protectedFields, and even when the object owning the relation was not readable by the client under its ACL or class-level permissions. The request requires only the public API credentials that Parse clients normally carry — no user session, master key, or Cloud Code is needed. As a result, an unauthenticated client who knows or obtains the owning object's objectId could enumerate the objects linked through a protected relation, or combine the operator with an objectId constraint to use it as a membership oracle — confirming whether a specific object is linked to a private parent. This affects applications that rely on protectedFields or object ACLs to keep Relation membership confidential, such as private group memberships, block lists, or account-to-resource associations. This issue has been patched in versions 8.6.80 and 9.9.1-alpha.6.

    Published: 12 Jun 2026
    8.7
    High

    CVE-2026-12043

    Last Modified: 12 Jun 2026

    Improper handling of HPACK dynamic table size updates in the AWS Common Runtime aws-c-http library might allow a remote threat actor operating a server to cause memory corruption on a connecting client application, potentially leading to arbitrary code execution, via a crafted sequence of HTTP/2 HEADERS frames. To remediate this issue, users should upgrade to aws-c-http version 0.11.0.

    Published: 12 Jun 2026
    5.9
    Medium

    CVE-2026-53725

    Last Modified: 13 Jun 2026

    Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. From version 9.8.0 to before version 9.9.1-alpha.5, apps that enable MFA and deny get on the _User class via Class-Level Permissions could expose sensitive user data through the /login and /verifyPassword endpoints. These endpoints re-fetch the user through the access-controlled query pipeline (CLP, protectedFields, auth-adapter sanitizers) before responding. When that re-fetch was denied by the _User get permission, the server fell back to the raw database row, exposing raw authData (including MFA TOTP secrets and recovery codes) and fields hidden by protectedFields (when protectedFieldsOwnerExempt is false). /verifyPassword is the most severe: with only a username and password (no session or MFA token), an attacker who knows a victim's password could retrieve their MFA secret and recovery codes, defeating the second factor. This issue has been patched in version 9.9.1-alpha.5.

    Published: 12 Jun 2026
    2.1
    Low

    CVE-2026-53724

    Last Modified: 12 Jun 2026

    Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.79 and 9.9.1-alpha.4, the default file upload extension blocklist can be bypassed by appending a trailing dot to a filename whose extension would otherwise be blocked (e.g. poc.svg.). The trailing dot causes the extension parser to extract an empty string, which short-circuits the blocklist check, and the attacker-controlled Content-Type is forwarded to the storage adapter unchanged. Storage adapters that persist and serve the provided Content-Type (such as S3 or GCS) then serve the file with an active type such as image/svg+xml, enabling stored XSS when a victim opens the file URL. The default GridFS adapter is not affected because it sets X-Content-Type-Options: nosniff on responses. This issue has been patched in versions 8.6.79 and 9.9.1-alpha.4.

    Published: 12 Jun 2026
    5.1
    Medium

    CVE-2026-50099

    Last Modified: 12 Jun 2026

    During WiFi association, Naxclow device firmware prints the host network’s SSID, PSK, and negotiated WPA keys in cleartext to an exposed UART console on production hardware. The UART pads are labeled, run with default serial settings, and drop to an interactive RT-Thread shell that permits arbitrary memory reads, enabling full firmware extraction. An attacker with brief physical access, common for outdoor-mounted devices, can therefore recover WiFi credentials and bootstrap firmware-side attacks.

    Published: 12 Jun 2026
    6.9
    Medium

    CVE-2026-50008

    Last Modified: 12 Jun 2026

    Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. From version 9.8.0 to before version 9.9.1-alpha.3, the routeAllowList server option restricts external client access to a configured list of REST API routes. The check is only enforced as Express middleware against the outer HTTP request URL, so the /batch handler dispatches each sub-request to the internal router without re-running the allow-list check. An external caller whose outer route matches batch can issue batch sub-requests to any REST API route that the operator omitted from the allow-list. Authentication, ACL, CLP, and other inner-route authorization controls still apply — only the operator-configured route firewall is bypassed. This issue has been patched in version 9.9.1-alpha.3.

    Published: 12 Jun 2026
    5.1
    Medium

    CVE-2026-10715

    Last Modified: 14 Jul 2026

    Camaleon CMS 2.9.2 contains an improper authorization vulnerability in the administrator draft autosave endpoint. A low-privileged authenticated user can send an arbitrary post_id to POST /admin/post_type/<POST_TYPE_ID>/drafts and overwrite the draft associated with another user's post.

    Published: 12 Jun 2026
    8.7
    High

    CVE-2026-47138

    Last Modified: 12 Jun 2026

    Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.77 and 9.9.1-alpha.1, an unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains adversarial input that triggers polynomial backtracking in a request-header parser. The parsing runs before session authentication and before rate limiting on every /parse/* request, so the request consumes seconds to minutes of synchronous CPU on a Node.js worker before any access control evaluates it. A small number of concurrent requests can saturate a worker; a single large request via the body-field variant can pin a worker for minutes. Production deployments running the default configuration are affected. This issue has been patched in versions 8.6.77 and 9.9.1-alpha.1.

    Published: 12 Jun 2026
    6.9
    Medium

    CVE-2026-47248

    Last Modified: 12 Jun 2026

    Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.78 and 9.9.1-alpha.2, Parse Server's GraphQL endpoint discloses schema metadata to unauthenticated callers through Did you mean ...? suggestions embedded in GraphQL validation-error messages. An unauthenticated caller who knows only the public application id can iteratively send malformed queries to reconstruct class names, field names, argument names, mutation names, and input-object fields. This issue has been patched in versions 8.6.78 and 9.9.1-alpha.2.

    Published: 12 Jun 2026
    6.9
    Medium

    CVE-2026-50244

    Last Modified: 12 Jun 2026

    The Naxclow platform exposes a registration endpoint that accepts signed requests containing a batch prefix and an arbitrary caller-supplied account identifier, without validating any ownership relationship. Each call mints a new sequential device identifier and returns the current high-water counter value for the batch, allowing callers to measure and enumerate the active device space. The endpoint’s behavior enables precise fleet enumeration.

    Published: 12 Jun 2026
    6.9
    Medium

    CVE-2026-42932

    Last Modified: 12 Jun 2026

    Naxclow device identifiers use fixed manufacturing prefixes combined with sequential counters, producing a fully predictable and enumerable identifier space. Because the platform also exposes an endpoint that reveals the current identifier high-water mark, the active fleet can be enumerated.

    Published: 12 Jun 2026
    8.7
    High

    CVE-2026-42947

    Last Modified: 12 Jun 2026

    A flaw in Naxclow's platform’s onboarding workflow allows an attacker to replay a confirm-then-bind sequence to silently reassign a device to an arbitrary account. Because the affected endpoints validate request signatures but do not confirm legitimate ownership, an attacker with any account can take over a device without user interaction while the device remains online and unaware.

    Published: 12 Jun 2026
    4.3
    Medium

    CVE-2026-47236

    Last Modified: 15 Jun 2026

    Solidtime is an open-source time-tracking app. Prior to version 0.12.2, Solidtime defines an explicit invitations:view and members:view permissions that gates the official invitations and members API. The Jetstream web team page authorizes access with only belongsToTeam() and then loads and serializes all pending invitation emails as well as members into Inertia props. Any employee who belongs to the organization can read pending invitation email addresses and members through the serialised inertia data in the team page body even though the same user is forbidden from the API. This issue has been patched in version 0.12.2.

    Published: 12 Jun 2026
    8.7
    High

    CVE-2026-50108

    Last Modified: 12 Jun 2026

    The Naxclow platform API that returns device relay registration details exposes a persistent credential without verifying that the requester is the legitimate device or owner. An actor able to present a platform-valid request signature can retrieve credentials for arbitrary devices and register on the relay as that device, enabling interception and disruption of its communications.

    Published: 12 Jun 2026
    7.2
    High

    CVE-2026-42306

    Last Modified: 16 Jun 2026

    Moby is an open source container framework. In Docker Engine prior to version 29.5.1, Docker Daemon versions 28.5.2 and prior, and Moby Daemon prior to version 2.0.0-beta.14, a race condition during docker cp mount setup allows a malicious container to redirect a bind mount target to an arbitrary host path, potentially overwriting host files or causing denial of service. This issue has been patched in Docker Engine version 29.5.1 and Moby Daemon version 2.0.0-beta.14.

    Published: 12 Jun 2026
    6.1
    Medium

    CVE-2026-41568

    Last Modified: 16 Jun 2026

    Moby is an open source container framework. In Docker Engine prior to version 29.5.1, Docker Daemon versions 28.5.2 and prior, and Moby Daemon prior to version 2.0.0-beta.14, a race condition during docker cp mount setup allows a malicious container to create empty files or directories at arbitrary absolute paths on the host filesystem. This issue has been patched in Docker Engine version 29.5.1 and Moby Daemon version 2.0.0-beta.14.

    Published: 12 Jun 2026
    9.2
    Critical

    CVE-2026-50101

    Last Modified: 12 Jun 2026

    Naxclow devices use a server-side, per-device relay credential that never rotates and is re-issued to the device on each boot. Because this credential remains valid indefinitely and cannot be reset or revoked by the legitimate owner, any party that obtains it through any exposure path can maintain persistent access to the device’s relay channel. This enables long-term impersonation or interception, even after factory resets or re-onboarding.

    Published: 12 Jun 2026
    9.2
    Critical

    CVE-2026-28742

    Last Modified: 12 Jun 2026

    Naxclow devices use a uniform request-signing scheme based on a hard-coded, platform-wide salt embedded in every firmware image. Once this salt is recovered from any device, an attacker can generate valid signatures for arbitrary device or account operations due to the absence of per-device keys, server-side nonce tracking, or replay protections. Combined with the system’s use of plain HTTP for control-plane traffic, the construction enables broad request forgery and impersonation across the platform.

    Published: 12 Jun 2026
    8.7
    High

    CVE-2026-12143

    Last Modified: 11 Sept 2026

    form-data is a library for creating readable multipart/form-data streams. In versions through 4.0.5, the `field` argument to `FormData#append` and the `filename` option are concatenated verbatim into the `Content-Disposition` header without escaping carriage return (CR), line feed (LF), or double-quote (") characters. An application that passes attacker-controlled data as a field name or filename (for example, an API gateway that turns JSON object keys into multipart field names) allows the attacker to terminate the header line and inject additional headers, or to smuggle entire additional multipart parts, into the request the application forwards to a backend. This can let the attacker add or override form fields (e.g. set `is_admin=true`) seen by the downstream parser. This is an instance of CWE-93 (CRLF injection). The fix escapes CR, LF, and `"` as `%0D`, `%0A`, and `%22` in field names and filenames, matching the serialization browsers use per the WHATWG HTML multipart/form-data encoding algorithm. Exploitation requires the consuming application to use untrusted input as a field name or filename; applications that use only fixed/trusted field names are not affected. Fixed in 2.5.6, 3.0.5, and 4.0.6.

    Published: 12 Jun 2026
    8.1
    High

    CVE-2026-53408

    Last Modified: 16 Jun 2026

    Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version 7.0.4 for Android and before 7.0.3 for iOS may allow an unauthenticated user to conduct an escalation of privilege via network access.

    Published: 12 Jun 2026
    8.1
    High

    CVE-2026-53407

    Last Modified: 12 Jun 2026

    Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version 7.0.4 for Android and before 7.0.3 for iOS may allow an unauthenticated user to conduct an escalation of privilege via network access.

    Published: 12 Jun 2026
    7.8
    High

    CVE-2026-53406

    Last Modified: 12 Jun 2026

    Insufficient Verification of Data Authenticity in Remote Control for Zoom Contact Center for Windows before version 7.0.0 may allow an authenticated user to enable an escalation of privilege via local access.

    Published: 12 Jun 2026
    Unknown

    CVE-2026-54296

    Last Modified: 15 Jun 2026

    ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-12075. Reason: This candidate is a duplicate of CVE-2026-12075. Notes: All CVE users should reference CVE-2026-12075 instead of this candidate.

    Published: 12 Jun 2026
    Unknown

    CVE-2026-54295

    Last Modified: 15 Jun 2026

    ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-12061. Reason: This candidate is a duplicate of CVE-2026-12061. Notes: All CVE users should reference CVE-2026-12061 instead of this candidate.

    Published: 12 Jun 2026
    Unknown

    CVE-2026-54294

    Last Modified: 15 Jun 2026

    ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-12072. Reason: This candidate is a duplicate of CVE-2026-12072. Notes: All CVE users should reference CVE-2026-12072 instead of this candidate.

    Published: 12 Jun 2026
    Unknown

    CVE-2026-54292

    Last Modified: 15 Jun 2026

    ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-12074. Reason: This candidate is a duplicate of CVE-2026-12074. Notes: All CVE users should reference CVE-2026-12074 instead of this candidate.

    Published: 12 Jun 2026
    8
    High

    CVE-2026-48165

    Last Modified: 16 Jun 2026

    MariaDB server is a community developed fork of MySQL server. From versions 10.6.1 to before 10.6.27, 10.11.1 to before 10.11.18, 11.4.1 to before 11.4.12, 11.8.1 to before 11.8.8, and 12.3.1, a high-privileged MariaDB user could've used wsrep_sst_receive_address or wsrep_sst_donor global system variables to execute shell commands as the uid of the mariadbd process on the galera joiner node. This issue has been patched in versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2.

    Published: 12 Jun 2026
    8
    High

    CVE-2026-48163

    Last Modified: 16 Jun 2026

    MariaDB server is a community developed fork of MySQL server. From versions 10.6.1 to before 10.6.27, 10.11.1 to before 10.11.18, 11.4.1 to before 11.4.12, 11.8.1 to before 11.8.8, and 12.3.1, during the SST the donor node is interpolating parameters that the joiner sent into the command line. Not all parameters were properly validated which could allow a malicious joiner to execute arbitrary shell commands on the donor side via the rsync SST method. This issue has been patched in versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2.

    Published: 12 Jun 2026
    5
    Medium

    CVE-2026-44173

    Last Modified: 16 Jun 2026

    MariaDB server is a community developed fork of MySQL server. From versions 10.6.1 to before 10.6.26, 10.11.1 to before 10.11.17, 11.4.1 to before 11.4.11, 11.8.1 to before 11.8.7, and 12.3.1, MariaDB allowed SELECT ... INTO OUTFILE and SELECT ... INTO DUMPFILE without verifying the FILE privilege if the FROM clause contained only subqueries. This issue has been patched in versions 10.6.26, 10.11.17, 11.4.11, 11.8.7, and 12.3.2.

    Published: 12 Jun 2026
    6.9
    Medium

    CVE-2026-44172

    Last Modified: 16 Jun 2026

    MariaDB server is a community developed fork of MySQL server. In versions 3.3.18 and 3.4.8, an application that was taking non-validated user input, escaping it with mysql_real_escape_string() and sending it to the database using text protocol and big5 character set was vulnerable to SQL injections, even though mysql_real_escape_string() was supposed to prevent them. This issue has been patched in versions 3.3.19 and 3.4.9.

    Published: 12 Jun 2026
    6.3
    Medium

    CVE-2026-44171

    Last Modified: 16 Jun 2026

    MariaDB server is a community developed fork of MySQL server. From versions 10.6.1 to before 10.6.26, 10.11.1 to before 10.11.17, 11.4.1 to before 11.4.11, 11.8.1 to before 11.8.7, and 12.3.1, mbstream did not check for /../ in the path when unpacking the archive. A proper backup can never contain such paths, but a specially crafted archive could have caused mbstream to create files outside of the target-dir path. This issue has been patched in versions 10.6.26, 10.11.17, 11.4.11, 11.8.7, and 12.3.2.

    Published: 12 Jun 2026
    4.3
    Medium

    CVE-2026-44169

    Last Modified: 15 Jun 2026

    MariaDB server is a community developed fork of MySQL server. From versions 11.4.1 to before 11.4.11, 11.8.1 to before 11.8.7, and 12.3.1, a user getting EXECUTE access to a stored routine via a role, could see the routine definition even without SHOW CREATE ROUTINE privilege. This issue has been patched in versions 11.4.11, 11.8.7, and 12.3.2.

    Published: 12 Jun 2026
    8
    High

    CVE-2026-44168

    Last Modified: 16 Jun 2026

    MariaDB server is a community developed fork of MySQL server. From versions 10.6.1 to before 10.6.26, 10.11.1 to before 10.11.17, 11.4.1 to before 11.4.11, 11.8.1 to before 11.8.7, and 12.3.1, during the SST the donor node is interpolating parameters that the joiner sent into the command line. Not all parameters were properly validated which could allow a malicious joiner to execute arbitrary shell commands on the donor side via the mariabackup SST method. This issue has been patched in versions 10.6.26, 10.11.17, 11.4.11, 11.8.7, and 12.3.2.

    Published: 12 Jun 2026
    6.3
    Medium

    CVE-2026-44170

    Last Modified: 17 Jun 2026

    MariaDB server is a community developed fork of MySQL server. From versions 10.6.1 to before 10.6.26, 10.11.1 to before 10.11.17, 11.4.1 to before 11.4.11, 11.8.1 to before 11.8.7, and 12.3.1, MariaDB on WIndows with installed CONNECT engine and enabled REST support interpolated table HTTP attribute into the curl command line without proper sanitizing. This allows the user to execute shell commands on the server. This issue has been patched in versions 10.6.26, 10.11.17, 11.4.11, 11.8.7, and 12.3.2.

    Published: 12 Jun 2026
    8.7
    High

    CVE-2026-47216

    Last Modified: 12 Jun 2026

    Typesense is a fast, typo-tolerant search engine. Prior to versions 29.1 and 30.2, there is an unauthenticated denial-of-service vulnerability in the /multi_search endpoint. A specially crafted request can trigger an unhandled exception during request processing, causing the server process to terminate. This issue can be exploited over the network without authentication and results in service unavailability. The duration of impact may vary depending on system configuration and dataset size. This issue has been patched in versions 29.1 and 30.2.

    Published: 12 Jun 2026
    6
    Medium

    CVE-2026-47225

    Last Modified: 12 Jun 2026

    Typesense is a fast, typo-tolerant search engine. Prior to versions 29.1 and 30.2, there is a cache isolation issue affecting search requests that use both server-side search result caching and Scoped Search API Keys. Under specific request ordering, cached search results could be reused across requests with different Scoped Search API Key constraints. This could result in a request receiving search results that should have been restricted by its Scoped Search API Key. This issue only affects search requests that use both server-side search result caching and Scoped Search API Keys with embedded filters to restrict access to search results within a collection. This vulnerability may result in unintended disclosure of search results across scoped authorization contexts. This issue has been patched in versions 29.1 and 30.2.

    Published: 12 Jun 2026
    7.8
    High

    CVE-2026-47965

    Last Modified: 12 Jun 2026

    Acrobat Reader versions 24.001.30365, 26.001.21651 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

    Published: 12 Jun 2026
    9.5
    Critical

    CVE-2026-48558

    Last Modified: 14 Jul 2026

    SimpleHelp versions 5.5.15 and prior and 6.0 pre-release versions contain an authentication bypass vulnerability in the OIDC authentication flow. When OIDC authentication is configured, identity tokens submitted during login are accepted without verifying their cryptographic signature. In a vulnerable configuration, a remote, unauthenticated attacker can submit a forged token containing arbitrary identity claims to obtain a fully authenticated technician session. In some configurations, this may also allow bypass of multi-factor authentication. No user interaction is required.

    Published: 12 Jun 2026
    5.4
    Medium

    CVE-2026-47223

    Last Modified: 13 Jun 2026

    NanaZip is the 7-Zip derivative intended for the modern Windows experience. From version 3.0.1000.0 to before version 6.0.1698.0, a heap out-of-bounds read exists in the Android Verified Boot (AVB) vbmeta image parser in NanaZip (via the upstream 7-Zip AvbHandler). A 32-bit unsigned integer overflow in the bounds check pos + ht.salt_len > descSize allows an attacker-controlled salt_len field to bypass validation, causing CByteBuffer::CopyFrom to memcpy up to ~4 GiB past the end of a 64. This issue has been patched in stable version 6.0.1698.0 and preview version 6.5.1742.0.

    Published: 12 Jun 2026
    4.3
    Medium

    CVE-2026-47224

    Last Modified: 12 Jun 2026

    NanaZip is the 7-Zip derivative intended for the modern Windows experience. From version 3.0.1000.0 to before version 6.0.1698.0, a heap buffer-overflow read exists in the LVM2 physical-volume metadata parser in NanaZip (via the upstream 7-Zip LvmHandler). The vulnerability is triggered when opening a crafted LVM disk image. This issue has been patched in stable version 6.0.1698.0 and preview version 6.5.1742.0.

    Published: 12 Jun 2026
    5.4
    Medium

    CVE-2026-47222

    Last Modified: 12 Jun 2026

    NanaZip is the 7-Zip derivative intended for the modern Windows experience. From version 3.0.1000.0 to before version 6.0.1698.0, a heap out-of-bounds read exists in the Android Verified Boot (AVB) vbmeta image parser in NanaZip (via the upstream 7-Zip AvbHandler). An unsigned integer underflow in a bounds check allows an attacker-controlled value_num_bytes field to pass validation, causing AddNameToString to read up to ~4 GiB past the end of a 64 KiB heap buffer. This causes a deterministic crash (denial of service) when opening a crafted .avb or .img file. This issue has been patched in stable version 6.0.1698.0 and preview version 6.5.1742.0.

    Published: 12 Jun 2026
    7.1
    High

    CVE-2026-53982

    Last Modified: 13 Jun 2026

    Cap-go Console < 12.28.2 contains a denial-of-service vulnerability in its account deletion flow that allows an attacker to block authentication and onboarding functions by triggering account deletion while a device identifier is linked to the active session. The platform incorrectly associates the deletion state with the device identifier, causing the affected device or browser environment to be redirected to an account-disabled page for approximately 30 days, preventing any account login or registration from that device.

    Published: 12 Jun 2026
    7.6
    High

    CVE-2026-6961

    Last Modified: 15 Jun 2026

    Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 Mattermost fails to sanitize FileInfo.Name received from federated peers during shared channel file sync, which allows an attacker who controls a federated server to write files to arbitrary locations within the target server's filestore via path traversal sequences in the filename field.. Mattermost Advisory ID: MMSA-2026-00661

    Published: 12 Jun 2026
    8.8
    High

    CVE-2026-7387

    Last Modified: 12 Jun 2026

    Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 Mattermost fails to require role-management authorization when setting the scheme_admin flag on group syncable link and patch endpoints, which allows a user with group-link permissions to escalate themselves and group members to team or channel admin via crafted API requests.. Mattermost Advisory ID: MMSA-2026-00665

    Published: 12 Jun 2026
    5.3
    Medium

    CVE-2026-6046

    Last Modified: 12 Jun 2026

    Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 fail to validate that a username returned during bot registration belongs to a bot account, which allows an unprivileged attacker to intercept private messages sent by plugins via direct message channels by pre-registering a user account with a predictable plugin bot username.. Mattermost Advisory ID: MMSA-2026-00649

    Published: 12 Jun 2026
    4.3
    Medium

    CVE-2026-6689

    Last Modified: 12 Jun 2026

    Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 Fail to enforce PermissionInviteUser when setting AllowOpenInvite or AllowedDomains during team creation (the check was only applied on update/patch), which allows an authenticated user holding PermissionCreateTeam but not PermissionInviteUser on the resulting team to configure invite-controlled team settings (make the team publicly joinable via open invite and/or constrain membership via allowed domains) that they are not permitted to set on an existing team via POST /api/v4/teams with allow_open_invite: true and/or a non-empty allowed_domains in the request body.. Mattermost Advisory ID: MMSA-2026-00655

    Published: 12 Jun 2026
    6.5
    Medium

    CVE-2026-7184

    Last Modified: 12 Jun 2026

    Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15 fail to sanitize the Remote Cluster API response on PATCH operations, which allows authenticated users with the {{manage_secure_connections}} permission to obtain remote cluster authentication tokens via a PATCH request to the remote cluster endpoint.. Mattermost Advisory ID: MMSA-2026-00662

    Published: 12 Jun 2026
    6.7
    Medium

    CVE-2026-6739

    Last Modified: 12 Jun 2026

    Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 fail to require system-level permission when patching protected default system roles, which allows authenticated users with delegated user-management permissions to escalate privileges by altering built-in role permissions via the role patch API.. Mattermost Advisory ID: MMSA-2026-00656

    Published: 12 Jun 2026
    4.3
    Medium

    CVE-2026-3433

    Last Modified: 12 Jun 2026

    Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 fail to restrict role_updated websocket event broadcasts to members of the affected team or channel which allows an authenticated attacker with guest-level access to observe permission scheme change notifications for private teams they are not a member of via the websocket connection.. Mattermost Advisory ID: MMSA-2026-00616

    Published: 12 Jun 2026