Vulnerability in Mattermost
CVE-2025-4981
Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to sanitize filenames in the archive extractor which allows authenticated users to write files to arbitrary locations on the…
EPSS: 0.007 (48.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Mattermost — versions 10.5.0, 9.11.0, 10.8.0
- Mattermost Mattermost_server — versions 10.8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- responsibledisclosure@mattermost.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-4981?
- CVE-2025-4981 is a critical-severity vulnerability in Mattermost, classified under Uncontrolled Search Path Element. CVSS score: 9.9/10. Published 2025-06-20.
- How severe is CVE-2025-4981?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2025-4981 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.