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    CVE-2026-74869

    stoatchat before 0.15.0 contains a missing authorization vulnerability in the Subscribe message handler that allows authenticated attackers to enumerate members and monitor profile updates of private servers without membership. Attackers can subscribe to any server's member-update topic by sending a Subscribe message with an arbitrary server ID, receiving live UserUpdate events including display names, avatars, and status changes for members they should not have access to.

    Published:Aug 17, 2026
    Last Modified:Aug 17, 2026
    EPS:Aug 17, 2026
    EPSS Score:
    CVSS Score:7.7

    Affected Products

    Vendor
    Stoatchat
    Product
    Stoatchat

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

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    CVE-2026-73057 (CVSS 8.7) — stoatchat before 0.15.0 fails to validate SVG viewBox dimensions in the proxy endpoint, allowing attackers to …
    CVE-2026-63088 (CVSS 7.7) — stoatchat before 0.14.0 contains a server-side request forgery (SSRF) vulnerability that allows unauthenticate…
    CVE-2024-58360 (CVSS 6.9) — stoatchat versions before 0.7.8 fail to enforce account creation restrictions including invite-only mode, emai…
    CVE-2026-63306 (CVSS 9.2) — stoatchat before 0.13.5 contains an unauthenticated server-side request forgery vulnerability in the /proxy an…
    CVE-2025-71388 (CVSS 7.6) — stoatchat (delta/Revolt) versions from 20241213-1 before 20250210-1 allow users with only ViewChannel (read) p…
    CVE-2025-71377 (CVSS 8.7) — stoatchat (delta) versions before 20250210-1 (0.8.2) contain a logic error in the query messages route. When f…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High