What’s Vulnerable › Vulnerabilities

CVE-2025-24866: Unauthorized Access to User Activity Logs API by delegated granular administration roles

• Severity: low (CVSS 2.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-04-10 · updated 2026-06-17
• Weakness: CWE-863

Description

Mattermost versions 9.11.x <= 9.11.8  fail to enforce proper access controls on the /api/v4/audits endpoint, allowing users with delegated granular administration roles who lack access to Compliance Monitoring to retrieve User Activity Logs.

Affected products

• Mattermost: from 9.11.0 before 9.11.9 — fixed in 9.11.9

How to fix

Upgrade to a fixed version: Mattermost 9.11.9. Check the vendor advisory for mitigations.

References

• https://mattermost.com/security-updates

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