Medium severity · published Nov 14, 2025
CVE-2025-11794
Password hash and MFA secret returned in user email verification endpoint
4.9
CVSS
0.3%
EPSS
No
On KEV
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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mattermost · Mattermost
10.11.0 through 10.11.3; 10.5.0 through 10.5.11; 10.12.0 through 10.12.0 · source: vendor
MS
Mattermost Server · Mattermost
10.5.0 before 10.5.12; 10.11.0 before 10.11.4; 10.12.0 before 10.12.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-11794
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-11794
Vendor Advisory
https://mattermost.com/security-updates
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