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    2.1
    Low

    CVE-2026-86238

    Last Modified: 8 Sept 2026

    A vulnerability was determined in projectworlds Online Examination System 1.0. The affected element is an unknown function of the file feedback.php of the component Feedback Form. Executing a manipulation of the argument Name/Subject can lead to cross site scripting. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.

    Published: 7 Sept 2026
    5.5
    Medium

    CVE-2026-86237

    Last Modified: 8 Sept 2026

    A vulnerability was found in openagents-org openagents up to 0.8.19/0.9.3.post20. Impacted is the function test_default_model of the file sdk/src/openagents/sdk/transports/http.py. Performing a manipulation of the argument base_url results in server-side request forgery. The attack may be initiated remotely. The exploit has been made public and could be used. Endpoint and both sinks unchanged since filing; only the file moved (e277dd1a). Maintainer closed as inapplicable yet the identical unguarded code still ships in 0.9.3.post20. Sibling admin endpoints do call the shipped-but-unused-by-this-handler _require_admin().

    Published: 7 Sept 2026
    2.1
    Low

    CVE-2026-86236

    Last Modified: 11 Sept 2026

    A vulnerability has been found in itsourcecode Sales and Inventory System 1.0. This issue affects some unknown processing of the file /pages/pro_transac.php?action=add. Such manipulation of the argument Name leads to sql injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

    Published: 7 Sept 2026
    2.1
    Low

    CVE-2026-86235

    Last Modified: 8 Sept 2026

    A flaw has been found in itsourcecode Sales and Inventory System 1.0. This vulnerability affects unknown code of the file /pages/pos_transac.php?action=add. This manipulation of the argument Customer causes sql injection. The attack can be initiated remotely. The exploit has been published and may be used.

    Published: 6 Sept 2026
    2.1
    Low

    CVE-2026-86234

    Last Modified: 9 Sept 2026

    A vulnerability was detected in itsourcecode Sales and Inventory System 1.0. This affects an unknown part of the file /pages/cust_transac.php?action=add. The manipulation of the argument firstname results in sql injection. It is possible to launch the attack remotely. The exploit is now public and may be used.

    Published: 6 Sept 2026
    2.1
    Low

    CVE-2026-86233

    Last Modified: 8 Sept 2026

    A security vulnerability has been detected in itsourcecode Sales and Inventory System 1.0. Affected by this issue is some unknown functionality of the file /pages/us_del.php?type=user. The manipulation of the argument ID leads to sql injection. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

    Published: 6 Sept 2026
    2.1
    Low

    CVE-2026-86232

    Last Modified: 8 Sept 2026

    A weakness has been identified in itsourcecode Sales and Inventory System 1.0. Affected by this vulnerability is an unknown functionality of the file /pages/sup_del.php?type=supplier. Executing a manipulation of the argument ID can lead to sql injection. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.

    Published: 6 Sept 2026
    2.9
    Low

    CVE-2026-86231

    Last Modified: 11 Sept 2026

    A security flaw has been discovered in mwiede jsch up to 2.28.5. Affected is the function getRevokedKeys of the file src/main/java/com/jcraft/jsch/KnownHosts.java. Performing a manipulation of the argument known_hosts results in improper check for certificate revocation. The attack is possible to be carried out remotely. The attack is considered to have high complexity. The exploitability is told to be difficult. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.28.6 is able to address this issue. The patch is named 194a2f76a5c0f1c3f778565be3fd66bcafc42d23. You should upgrade the affected component.

    Published: 6 Sept 2026
    2.1
    Low

    CVE-2026-86228

    Last Modified: 8 Sept 2026

    A security vulnerability has been detected in JeecgBoot up to 3.9.3. This vulnerability affects the function exportXls of the file jeecg-boot/jeecg-boot-module/jeecg-boot-module-airag/src/main/java/org/jeecg/modules/airag/llm/controller/AiragModelController.java. Such manipulation of the argument credential leads to improper access controls. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 3.9.5 is able to resolve this issue. The name of the patch is a2be896f753936956ee6863b632b8e5a0231345c. You should upgrade the affected component.

    Published: 6 Sept 2026
    9.8
    Critical

    CVE-2026-86304

    Last Modified: 8 Sept 2026

    MojoX::Authentication versions before 0.006 for Perl allow SAML authentication bypass because parse_assertion builds Net::SAML2::Binding::POST without a trust anchor. parse_assertion in MojoX::Authentication::Model::SAML2 calls Net::SAML2::Binding::POST->new with no cacert, cert_text or anchors argument, then passes the returned XML to Net::SAML2::Protocol::Assertion->new_from_xml with the IdP signing certificate as cacert. In Net::SAML2 before 0.86 that certificate guards only encrypted assertions, so the signature on an unencrypted assertion is checked against the certificate the response itself carries. An attacker starts a SAML login, then posts a response signed with a certificate of their own. The audience, InResponseTo and timestamp checks that follow are all satisfiable by the attacker, so the response authenticates any NameID it carries.

    Published: 6 Sept 2026
    1.3
    Low

    CVE-2026-86227

    Last Modified: 9 Sept 2026

    A weakness has been identified in valkey-io valkey up to 9.0.5/9.1.1. This affects the function kvstoreGetHashtable of the file src/kvstore.c. This manipulation of the argument didx causes out-of-bounds read. It is possible to initiate the attack remotely. The attack is considered to have high complexity. It is indicated that the exploitability is difficult. The exploit has been made available to the public and could be used for attacks. Patch name: 4691888e7fab3df128f0bde5750c9fde2ae552fa. To fix this issue, it is recommended to deploy a patch. Exploitation requires cluster mode plus attacker-controlled dump.rdb at startup (data-dir write access, replication feed, or a stored crafted RDB) - an attacker-position DoS at boot, not network pre-auth. The issue report was closed stating it "is worth fixing for the sake of memory safety… but I don't think it meets our bar for a security disclosure."

    Published: 6 Sept 2026
    2
    Low

    CVE-2026-86226

    Last Modified: 8 Sept 2026

    A security flaw has been discovered in Projectwolds Online Attendance System 1.0. Affected by this issue is some unknown functionality of the file profile.php. The manipulation of the argument email results in cross site scripting. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks.

    Published: 6 Sept 2026
    5.5
    Medium

    CVE-2026-86225

    Last Modified: 8 Sept 2026

    A vulnerability was identified in SourceCodester Class and Exam Timetabling System 1.0. Affected by this vulnerability is the function mysqli_query of the file /admin/modal_add_room.php. The manipulation of the argument room_name leads to sql injection. The attack is possible to be carried out remotely. The exploit is publicly available and might be used.

    Published: 6 Sept 2026
    5.5
    Medium

    CVE-2026-86224

    Last Modified: 11 Sept 2026

    A vulnerability was determined in SourceCodester Class and Exam Timetabling System 1.0. Affected is the function mysqli_query of the file /admin/modal_add_product.php. Executing a manipulation of the argument fname can lead to sql injection. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.

    Published: 6 Sept 2026
    5.5
    Medium

    CVE-2026-86223

    Last Modified: 8 Sept 2026

    A vulnerability was found in SourceCodester Class and Exam Timetabling System 1.0. This impacts the function mysqli_query of the file /admin/modal_add_coursea.php. Performing a manipulation of the argument course results in sql injection. Remote exploitation of the attack is possible. The exploit has been made public and could be used.

    Published: 6 Sept 2026
    5.5
    Medium

    CVE-2026-86222

    Last Modified: 9 Sept 2026

    A vulnerability has been found in SourceCodester Class and Exam Timetabling System 1.0. This affects the function mysqli_query of the file /admin/modal_add_course2.php. Such manipulation of the argument course leads to sql injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

    Published: 6 Sept 2026
    5.5
    Medium

    CVE-2026-86221

    Last Modified: 6 Sept 2026

    A flaw has been found in SourceCodester Class and Exam Timetabling System 1.0. The impacted element is the function mysqli_query of the file /admin/modal_add_course1.php. This manipulation of the argument course causes sql injection. The attack may be initiated remotely. The exploit has been published and may be used.

    Published: 6 Sept 2026
    8.2
    High

    CVE-2026-82209

    Last Modified: 11 Sept 2026

    When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a `Set-Cookie` header where the `Domain` attribute explicitly matches an origin host that is itself a public suffix (e.g., `Domain=co.uk` set by `co.uk`). Instead of coercing it into a strict host-only cookie, libcurl saves the cookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is inappropriately included in subsequent outbound requests or HTTP redirects to arbitrary sibling subdomains under the same public suffix (e.g., `attacker.co.uk`).

    Published: 6 Sept 2026
    7.5
    High

    CVE-2026-82208

    Last Modified: 11 Sept 2026

    With the wolfSSL backend, when CA caching is enabled and an `CURLOPT_SSL_CTX_FUNCTION` callback replaces the trust store, libcurl can silently reinstall the cached store after the callback returns. A certificate trusted by the cached store but rejected by the callback-selected store is then incorrectly accepted.

    Published: 6 Sept 2026
    7.5
    High

    CVE-2026-80255

    Last Modified: 11 Sept 2026

    A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of space (ascii code 32) immediately before the `Secure` attribute causes curl to store the cookie without its Secure flag. The cookie might then wrongfully be sent over plaintext HTTP on subsequent requests to the same host.

    Published: 6 Sept 2026
    7.5
    High

    CVE-2026-80231

    Last Modified: 11 Sept 2026

    A flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup for a given hostname even when using a different Native CA Store setting (`CURLSSLOPT_NATIVE_CA`) than when the connection was created.

    Published: 6 Sept 2026
    7.5
    High

    CVE-2026-80230

    Last Modified: 11 Sept 2026

    When `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable standard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and `CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on connections established without a presented server certificate. Bypassing the pinning check under these disabled-verification conditions allows unauthenticated connections to succeed when they should be rejected.

    Published: 6 Sept 2026
    7.5
    High

    CVE-2026-80229

    Last Modified: 11 Sept 2026

    When performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating easy handles. In OpenSSL 3 provider configurations, libcurl attaches an allocated library context to the easy handle's state and passes it to OpenSSL without acquiring an ownership reference; destroying the easy handle prematurely frees this context while the active connection retains a dangling pointer, leading to a heap-use-after-free upon subsequent I/O or post-handshake operations.

    Published: 6 Sept 2026
    9.8
    Critical

    CVE-2026-19931

    Last Modified: 11 Sept 2026

    A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. This can make user B's request get sent over user A's previously authenticated connection.

    Published: 6 Sept 2026
    9.1
    Critical

    CVE-2026-18924

    Last Modified: 11 Sept 2026

    A flaw in libcurl's handling of HTTP/2 Server Push streams, when the parent handle is set to share connections with other handles, can lead to use-after-free in the cleanup process.

    Published: 6 Sept 2026
    7.4
    High

    CVE-2026-13608

    Last Modified: 11 Sept 2026

    A flaw in the libcurl SASL negotiation for LDAP authentication allows an incomplete handshake sequence to be misinterpreted as a successful cryptographic verification. An attacker executing a Man-in-the-Middle (MITM) attack can inject a premature or shortcut response that bypasses complete peer validation.

    Published: 6 Sept 2026
    9.8
    Critical

    CVE-2026-86219

    Last Modified: 8 Sept 2026

    Authen::SASL::Perl::DIGEST_MD5 versions before 2.2100 for Perl accept replayed authentication responses via unverified nonce in server_step. server_start generates a fresh nonce and sends it in the challenge, and nothing later compares that value against the nonce the client returns. server_step derives the expected digest from the client's own parameters, so a response verifies whenever its digest matches the nonce it carries. The count table it also checks is keyed on the client-supplied nonce and starts empty in each new server object, so a captured first response, carrying `nc=00000001`, passes that too. RFC 2831 defines the nonce in the response as the value the server sent in the preceding challenge. An attacker who observes one successful `qop=auth` exchange can replay the captured response against a later session for the same service, host, realm and user, and authenticate as that user without knowing the password.

    Published: 6 Sept 2026
    5.5
    Medium

    CVE-2026-86220

    Last Modified: 8 Sept 2026

    A vulnerability was detected in SourceCodester Class and Exam Timetabling System 1.0. The affected element is the function mysqli_query of the file /admin/modal_add_course.php. The manipulation of the argument course results in sql injection. The attack can be launched remotely. The exploit is now public and may be used.

    Published: 6 Sept 2026
    8.3
    High

    CVE-2026-82750

    Last Modified: 8 Sept 2026

    Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to inflate the fee-payer's gas cost per sponsored payment by a large multiplier and to have the sponsor pay for EIP-7702 account delegations of the client's choosing. When the server sponsors Tempo payments, MPP.Methods.Tempo.FeePayerPolicy.measure/3 in lib/mpp/methods/tempo/fee_payer_policy.ex bounds the gas fields, the fee budget, the validity window and the access list of the client-signed 0x76 envelope, but never reads its aa_authorization_list field. Every signed delegation in that list is charged as intrinsic gas before the payment call runs, so a client attaching delegations from throwaway authority keys makes the sponsor pay for them within the default gas_limit ceiling. At the reporter's default of seven entries the sponsored cost rises from about 46,575 gas to about 1,884,087 gas. Because each entry is applied as a persistent set-code delegation, a client can also upgrade its own accounts to delegated code at the sponsor's expense. This issue affects mpp: from 0.2.0 before 0.16.1.

    Published: 6 Sept 2026
    8.3
    High

    CVE-2026-82751

    Last Modified: 8 Sept 2026

    Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to inflate the fee-payer's gas cost per sponsored payment by a large multiplier and to have the sponsor pay for provisioning an access key on the client's own account. When the server sponsors Tempo payments, MPP.Methods.Tempo.FeePayerPolicy.measure/3 in lib/mpp/methods/tempo/fee_payer_policy.ex bounds the gas fields, the fee budget, the validity window and the access list of the client-signed 0x76 envelope, but does not check whether the envelope carries the optional key_authorization field. A client can attach a fully signed key authorization, provisioning a new access key with token spending limits on its own account, alongside the normal payment call. The key and each limit entry are persistent storage writes billed as intrinsic gas to the sponsor, bounded only by the gas_limit ceiling. At the reporter's default of one key with three token limits the sponsored cost rises from about 46,587 gas to about 1,808,700 gas, and the client keeps a valid access key it paid nothing for. This issue affects mpp: from 0.2.0 before 0.16.1.

    Published: 6 Sept 2026
    6.4
    Medium

    CVE-2026-83534

    Last Modified: 8 Sept 2026

    PostgreSQL Anonymizer contains a vulnerability in the anon.anonymize_database_parallel() function that allows the owner of a table to run arbitrary code with superuser privilege. The issue is fixed in PostgreSQL Anonymizer 3.2.0 and later versions

    Published: 6 Sept 2026
    6.4
    Medium

    CVE-2026-19634

    Last Modified: 8 Sept 2026

    PostgreSQL Anonymizer contains a SQL injection vulnerability in two import functions. A user can create a malicious JSON document containing specially crafted object names. If a superuser subsequently calls anon.import_database_rules() or anon.import_roles_rules(), the malicious code is executed with superuser privileges. The issue is fixed in PostgreSQL Anonymizer 3.1.4 and later

    Published: 6 Sept 2026
    8.8
    High

    CVE-2026-19633

    Last Modified: 8 Sept 2026

    PostgreSQL Anonymizer contains a vulnerability that allows unprivileged masked users to execute arbitrary code by abusing operators, domain casts, or view subqueries that carry untrusted expressions. When these objects are evaluated in the context of the extension’s masking mechanisms, the malicious code can run with elevated privileges. The issue is fixed in PostgreSQL Anonymizer 3.1.4 and later versions

    Published: 6 Sept 2026
    5.5
    Medium

    CVE-2026-86217

    Last Modified: 11 Sept 2026

    A vulnerability was detected in code-projects Hotel and Tourism Reservation in PHP 1.0. Affected is an unknown function of the file /ht/hotel_db%20(1).sql of the component Database Backup Handler. The manipulation results in information disclosure. The attack may be launched remotely. The exploit is now public and may be used.

    Published: 6 Sept 2026
    7.1
    High

    CVE-2026-86283

    Last Modified: 8 Sept 2026

    MISP's UiBeta theme collection view (app/View/Themed/UiBeta/Collections/view.ctp) performed a secondary query of member events by UUID without applying the caller's access control list (ACL). The CollectionsController::view() action correctly resolved collection element UUIDs through Event::fetchSimpleEvents($user, ...), which enforces per-user event ACL. However, the view template independently re-queried the same UUIDs using only an Event.uuid IN (...) condition, omitting the createEventConditions() authorization filter. Because collection element UUIDs are stored without server-side authorization against the referenced event (CollectionElementsController::add() accepts whatever UUID the collection owner posts), an authenticated user with view access to a collection could retrieve full details of events they are not permitted to read. The exposed data included event identifiers, info, dates, timestamps, creator organization, all event tags, and galaxy clusters (the latter attached via a cluster-scoped rather than event-scoped ACL check). This constitutes an authorization bypass at the presentation layer, allowing horizontal privilege escalation across event boundaries within the MISP instance.

    Published: 6 Sept 2026
    2.1
    Low

    CVE-2026-86216

    Last Modified: 8 Sept 2026

    A security vulnerability has been detected in code-projects Hotel and Tourism Reservation in PHP 1.0. This impacts an unknown function of the file /ht/details.php. The manipulation of the argument room leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.

    Published: 6 Sept 2026
    2.1
    Low

    CVE-2026-86215

    Last Modified: 9 Sept 2026

    A vulnerability was identified in Mstfakts College-Management-System. The affected element is an unknown function of the file Front-end/server.php of the component Logout Handler. Such manipulation of the argument log_out leads to session expiration. It is possible to launch the attack remotely. The exploit is publicly available and might be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The project was informed of the problem early through an issue report but has not responded yet.

    Published: 6 Sept 2026
    5.5
    Medium

    CVE-2026-86214

    Last Modified: 8 Sept 2026

    A vulnerability was determined in Mstfakts College-Management-System. Impacted is an unknown function of the file Front-end/login.php. This manipulation of the argument email causes improper authentication. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.

    Published: 6 Sept 2026
    5.5
    Medium

    CVE-2026-86213

    Last Modified: 10 Sept 2026

    A vulnerability was found in Mstfakts College-Management-System. This issue affects the function mysqli_query of the file Front-end/university.php of the component Search Handler. The manipulation of the argument book_name/book_author results in sql injection. The attack may be performed from remote. The exploit has been made public and could be used. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The project was informed of the problem early through an issue report but has not responded yet.

    Published: 6 Sept 2026
    9
    Critical

    CVE-2026-86259

    Last Modified: 8 Sept 2026

    OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parameter to access sensitive cloud credentials and metadata.

    Published: 6 Sept 2026
    8.2
    High

    CVE-2026-86258

    Last Modified: 10 Sept 2026

    nbviewer through 1.0.1 contains a path traversal vulnerability in LocalFileHandler.can_show() that uses string-prefix comparison instead of proper path validation. Attackers can read files from sibling directories outside the configured root by requesting paths that share the root as a textual prefix, disclosing unintended notebooks and credentials.

    Published: 6 Sept 2026
    4.8
    Medium

    CVE-2026-86257

    Last Modified: 8 Sept 2026

    wger before 2.6 fails to sanitize first_name and last_name fields in the gym member TSV export endpoint, allowing any gym member to inject spreadsheet formulas. Attackers can inject formulas like =HYPERLINK to exfiltrate admin data or execute code when admins open the exported file in Excel or LibreOffice Calc.

    Published: 6 Sept 2026
    5.1
    Medium

    CVE-2026-86256

    Last Modified: 9 Sept 2026

    wger before 2.6 (affected versions <= 2.5.0) contains an open redirect vulnerability in the trainer_login view (wger/core/views/user.py). After a trainer enters impersonation mode, the view redirects to the user-supplied 'next' GET parameter via HttpResponseRedirect() without validating it with url_has_allowed_host_and_scheme(). An attacker who delivers a crafted link to an authenticated trainer can redirect the trainer's browser to an attacker-controlled domain, enabling phishing and leaking the wger URL structure (including the impersonated user's user_pk) via the Referer header.

    Published: 6 Sept 2026
    7.1
    High

    CVE-2026-86255

    Last Modified: 6 Sept 2026

    wger before 2.5 fails to validate the maximum duration of routine date ranges, allowing authenticated users to create routines spanning arbitrarily long periods. Attackers can trigger the date_sequence computation via routine detail endpoints, forcing the server to iterate thousands of times per request and exhaust worker threads, denying service to legitimate users.

    Published: 6 Sept 2026
    6.1
    Medium

    CVE-2026-86254

    Last Modified: 8 Sept 2026

    wger versions through master contain an incomplete authorization bypass in wger/core/views/user.py where three views retain the original gym-scope check using raw integer comparison instead of the is_same_gym() helper, allowing gym staff with gym=None to delete, deactivate, or activate any other user with gym=None. Attackers with gym.manage_gym permission and gym=None affiliation can permanently delete user accounts, lock users out via deactivation, or undo defensive deactivations by exploiting the None != None comparison edge case.

    Published: 6 Sept 2026
    8.2
    High

    CVE-2026-86253

    Last Modified: 10 Sept 2026

    h3 (npm package) versions <= 2.0.1-rc.14 contain a path traversal vulnerability in serveStatic(). On Node.js deployments, event.url.pathname is not normalized, so percent-encoded dot segments (%2e%2e) are passed to decodeURI() and decoded to ../ sequences without sanitization. An unauthenticated remote attacker can send crafted requests to endpoints served by serveStatic() to read arbitrary files outside the intended static directory. Fixed in 1.15.6 and 2.0.1-rc.15.

    Published: 6 Sept 2026
    6.9
    Medium

    CVE-2026-86252

    Last Modified: 8 Sept 2026

    h3 versions before 1.15.9 fail to sanitize carriage return characters in EventStream data and comment fields, allowing attackers to inject arbitrary SSE events by including unsanitized carriage returns. Attackers can inject event type directives, split single push calls into multiple browser-parsed events, or escape comment fields to inject data, bypassing the prior CVE fix that only addressed newline injection.

    Published: 6 Sept 2026
    8.2
    High

    CVE-2026-86251

    Last Modified: 9 Sept 2026

    h3 versions before 1.15.9 contain a path traversal vulnerability in the serveStatic utility. A double-decoding flaw allows a request path containing double-encoded dot sequences (e.g. %252e%252e) to be decoded to %2e%2e, which survives resolveDotSegments() because that function only checks for literal '.' characters. When the resulting asset ID is resolved by URL-based backends (CDN, S3, object storage), %2e%2e is interpreted as '..' per RFC 3986, enabling path traversal to read arbitrary files from the backend.

    Published: 6 Sept 2026
    8.7
    High

    CVE-2026-86250

    Last Modified: 6 Sept 2026

    h3 versions before 2.0.1-rc.18 fail to validate the chunk count parsed from user-controlled cookie values in setChunkedCookie() and deleteChunkedCookie() functions. Attackers can send a crafted cookie header with an extremely large chunk count to trigger an O(n²) cleanup loop that hangs the server process.

    Published: 6 Sept 2026
    5.3
    Medium

    CVE-2026-86205

    Last Modified: 8 Sept 2026

    h3 versions before 2.0.1-rc.18 contain an open redirect vulnerability in the redirectBack() utility that fails to sanitize protocol-relative paths in the Referer header pathname. Attackers can craft a same-origin URL with a double-slash path segment that passes origin validation but produces a Location header interpreted by browsers as a protocol-relative redirect to an external domain.

    Published: 6 Sept 2026
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