Mattermost Team Access Vulnerability in Mattermost Software
CVE-2025-58075

8.1HIGH

Key Information:

Vendor

Mattermost
Status
Mattermost
Vendor
CVE Published:
16 October 2025

What is CVE-2025-58075?

A significant access control vulnerability has been identified in Mattermost, where several versions fail to properly verify user permissions when joining teams through the original invite token. This flaw enables unauthorized individuals to join Mattermost teams without the necessary restrictions, posing a serious risk to user data and team integrity. It is crucial for users of the affected Mattermost versions to implement necessary updates to mitigate potential exploitation.

Affected Version(s)

Mattermost 10.11.0 <= 10.11.1

Mattermost 10.10.0 <= 10.10.2

Mattermost 10.5.0 <= 10.5.10

References

https://mattermost.com/security-updates

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

DoyenSec
JSON
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CVE-2025-58075 : Mattermost Team Access Vulnerability in Mattermost Software