CVE-2025-11794

Password hash and MFA secret returned in user email verification endpoint

State: Published
Severity: 4.9 Medium
Published: Nov 14, 2025
Updated: Dec 1, 2025
Reserved: Oct 15, 2025

Description

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

Scores

CVSS	Score	Vector	Source
3.1	4.9 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N	Mattermost

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
MattermostMattermost	10.11.0 through 10.11.3Affected 10.5.0 through 10.5.11Affected 10.12.0 through 10.12.0Affected 11.0.0Not affected 10.11.4Not affected 10.5.12Not affected 10.12.1Not affected

References

https://mattermost.com/security-updates

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