Permission Bypass in Mattermost Affects User Management
CVE-2025-3446

4.3MEDIUM

Key Information:

Vendor

Mattermost
Status
Mattermost
Vendor
CVE Published:
15 May 2025

What is CVE-2025-3446?

Mattermost versions 10.6.x through 10.6.1, 10.5.x through 10.5.2, 10.4.x through 10.4.4, and 9.11.x through 9.11.11 have a vulnerability that allows authenticated users with restricted permissions to invite non-guest members to a team. This oversight permits them to add guest users via the API, creating potential unauthorized access to team resources. Users must ensure they are running updated versions to mitigate exposure.

Affected Version(s)

Mattermost 10.6.0 <= 10.6.1

Mattermost 10.5.0 <= 10.5.2

Mattermost 10.4.0 <= 10.4.4

References

https://mattermost.com/security-updates

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

0x7oda7123
.