CVE-2025-11794

Password hash and MFA secret returned in user email verification endpoint

CVSS 4.9 MEDIUMEPSS 0.2%CWE-200

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.9EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

14 Nov 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected products

Mattermost · Mattermost

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References

https://mattermost.com/security-updates