UpHeron
All vulnerabilities

Servers and applications

CVE-2025-13870

Mattermost versions 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does not have access to

Severity
Medium 4.3
Published
2 Dec 2025
Last changed
18 Oct 2026
Added to UpHeron
1 Nov 2026
Fixed in
10.5.13, 10.11.5
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • From 10.5.0 before 10.5.13
  • From 10.11.0 before 10.11.5

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-13870
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-13870