CVE-2026-100678: Improper Restriction of Excessive Authentication Attempts

stoatchat before 0.15.5 fails to enforce account-level attempt limits on MFA login challenges, allowing attackers who know a password to guess TOTP codes with only IP-based rate limiting. Attackers can reuse MFA challenge tickets across multiple failed attempts and distribute guesses across IP...

CVE-2026-100677: Generation of Error Message Containing Sensitive Information

stoatchat before 0.15.5 contains an account enumeration vulnerability in the login endpoint that exposes source file locations in error responses. Unauthenticated attackers can distinguish between registered and unregistered email addresses by comparing error location fields returned from POST...

PT-2026-99350

Name of the Vulnerable Software and Affected Versions stoatchat versions prior to 0.15.5 Description An issue exists where the system fails to validate that Multi-Factor Authentication MFA tickets belong to the authenticated user. This allows an attacker to bypass MFA by using a valid ticket from...

PT-2026-99346

Name of the Vulnerable Software and Affected Versions stoatchat versions prior to 0.15.5 Description A denial of service issue exists in the acknowledgement worker responsible for processing mass mention messages. Authenticated users can send five specially crafted role-mention messages to...

PT-2026-99347

Name of the Vulnerable Software and Affected Versions stoatchat versions prior to 0.15.5 Description The media proxy/embed service improperly resolves SVG values as local filesystem paths when a fetched resource is served as image/svg+xml. An unauthenticated remote attacker can use the /proxy...

CVE-2026-100676: Protection Mechanism Failure

January, the media proxy/embed service of stoatchat stoatchat/stoatchat, before version 0.15.5 improperly resolves SVG values as local filesystem paths when a fetched resource is served as image/svg+xml. An unauthenticated remote attacker who causes the service to proxy an attacker-hosted SVG e.g...

PT-2026-99348

Name of the Vulnerable Software and Affected Versions stoatchat versions prior to 0.15.5 Description An account enumeration issue exists in the login endpoint. Unauthenticated attackers can identify whether an email address is registered by analyzing the error location fields returned in the...

PT-2026-99349

Name of the Vulnerable Software and Affected Versions stoatchat versions prior to 0.15.5 Description Insufficient enforcement of account-level attempt limits during MFA login challenges allows attackers with a valid password to guess TOTP Time-based One-Time Password codes. Because rate limiting ...

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 sendin...

EUVD-2026-60088

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 sendin...

CVE-2026-74869 stoatchat before 0.15.0 Missing Authorization via Subscribe

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 sendin...

CVE-2026-74869

StoatChat before version 0.15.0 has a missing-authorization flaw in the Subscribe message handler: authenticated users can send a Subscribe message with any arbitrary server ID and receive live UserUpdate events (display names, avatars, status) for members of private servers they are not part of....

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 sendin...

CVE-2026-74869 stoatchat before 0.15.0 Missing Authorization via Subscribe

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 sendin...

CVE-2026-74869: Missing Authorization

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 sendin...

PT-2026-76605

Name of the Vulnerable Software and Affected Versions stoatchat versions prior to 0.15.0 Description A missing authorization issue exists in the Subscribe message handler. Authenticated attackers can enumerate members and monitor profile updates of private servers they are not members of. By...

CVE-2026-73059

stoatchat before 0.15.0 contains a permission bypass vulnerability in the messagefetch route that checks only ViewChannel permission instead of requiring ReadMessageHistory. Attackers with ViewChannel access but ReadMessageHistory denied can retrieve individual message content by ID, bypassing th...

CVE-2026-73058

stoatchat versions before 0.15.0 fail to block the IPv6 unspecified address :: in the SSRF blocklist, allowing unauthenticated attackers to bypass protections via the /proxy and /embed endpoints. Attackers can craft requests using IPv6 literal syntax to access services on the loopback interface a...

EUVD-2026-59945

stoatchat before 0.15.0 contains a permission bypass vulnerability in the messagefetch route that checks only ViewChannel permission instead of requiring ReadMessageHistory. Attackers with ViewChannel access but ReadMessageHistory denied can retrieve individual message content by ID, bypassing th...

CVE-2026-73059 stoatchat before 0.15.0 Permission Bypass via message_fetch

stoatchat before 0.15.0 contains a permission bypass vulnerability in the messagefetch route that checks only ViewChannel permission instead of requiring ReadMessageHistory. Attackers with ViewChannel access but ReadMessageHistory denied can retrieve individual message content by ID, bypassing th...