MFA Enforcement Bypass in Mattermost Web Application
CVE-2025-27538

2.2LOW

Key Information:

Vendor

Mattermost
Status
Mattermost
Vendor
CVE Published:
16 April 2025

What is CVE-2025-27538?

The vulnerability in Mattermost allows users with the edit_other_users permission to bypass multi-factor authentication (MFA) checks when using specific API endpoints. This can lead to unauthorized modifications of MFA settings for other users, even if those users have not previously configured MFA. Affected versions include 10.5.x up to 10.5.1 and 9.11.x up to 9.11.9, posing a significant security risk by allowing potential exploitation of user account settings.

Affected Version(s)

Mattermost 10.5.0 <= 10.5.1

Mattermost 9.11.0 <= 9.11.9

Mattermost 10.6.0

References

https://mattermost.com/security-updates

CVSS V3.1

Score:
2.2
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

0x7oda7123
.