CVE-2025-2527

MEDIUM
Published May 15, 2025 Modified Aug 22, 2025 CWE-863

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.

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CVSS v3.1 Score

4.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-863 Incorrect Authorization

Affected Products

Vendor Product
mattermost mattermost_server
mattermost mattermost_server

References

Frequently Asked Questions

What is CVE-2025-2527? +
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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).
How severe is CVE-2025-2527? +
CVE-2025-2527 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2025-2527? +
CVE-2025-2527 affects products from mattermost, specifically: mattermost_server. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-2527? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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