CVE-2025-2527

Improper access control to group information

Description

Mattermost versions 10.5.x <= 10.5.2, 9.11.x <= 9.11.11 failed to properly verify a user's permissions when accessing groups, which allows an attacker to view group information via an API request.

Remediation

Solution:

  • Update Mattermost to versions 10.7.0, 10.5.3, 9.11.12 or higher.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Affected: Mattermost Mattermost
Published at:
Updated at:

References

Link Tags
https://mattermost.com/security-updates

Frequently Asked Questions

What is the severity of CVE-2025-2527?
CVE-2025-2527 has been scored as a medium severity vulnerability.
How to fix CVE-2025-2527?
To fix CVE-2025-2527: Update Mattermost to versions 10.7.0, 10.5.3, 9.11.12 or higher.
Is CVE-2025-2527 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-2527 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-2527?
CVE-2025-2527 affects Mattermost Mattermost.
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