CVE-2025-11794: Mattermost allows system administrators to access password hashes and MFA secrets
(updated )
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to sanitize user data which allows system administrators to access password hashes and MFA secrets via the POST /api/v4/users/{user_id}/email/verify/member endpoint
References
- github.com/advisories/GHSA-mqp8-pgg5-7x7m
- github.com/mattermost/mattermost
- github.com/mattermost/mattermost/commit/375ce229f4923205394d8f27925372b2cbf28130
- github.com/mattermost/mattermost/commit/6c288aa62bb3343183ec1d0a06360d14aa0193e9
- github.com/mattermost/mattermost/commit/a41db04d2746ab549d056db4ede4cd803f64989c
- github.com/mattermost/mattermost/commit/b822cea06bf5683a176e2c92711241bd29cd9389
- github.com/mattermost/mattermost/commit/e47349ea0fc072ee1dfb196d9bb1c8fd1a589224
- mattermost.com/security-updates
- nvd.nist.gov/vuln/detail/CVE-2025-11794
Code Behaviors & Features
Detect and mitigate CVE-2025-11794 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →