UpHeron
All vulnerabilities

Servers and applications

CVE-2025-36530

Mattermost versions 10.9.x <= 10.9.1, 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate file paths during plugin import operations which allows restricted admin users to install unauthorized custom plugins via path traversal in the import functionality, bypassing plugin signature enforcement and marketplace restrictions.

Severity
Medium 4.9
Published
21 Aug 2025
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.11.18, 10.5.9, 10.8.4, 10.9.2
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • From 9.11.0 before 9.11.18
  • From 10.5.0 before 10.5.9
  • From 10.8.0 before 10.8.4
  • From 10.9.0 before 10.9.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-36530
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-36530