UpHeron
All vulnerabilities

Servers and applications

CVE-2025-27571

Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to check the "Allow Users to View Archived Channels" configuration when fetching channel metadata of a post from archived channels, which allows authenticated users to access such information when a channel is archived.

Severity
Medium 4.3
Published
16 Apr 2025
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.11.10, 10.4.4, 10.5.2
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • From 9.11.0 before 9.11.10
  • From 10.4.0 before 10.4.4
  • From 10.5.0 before 10.5.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-27571
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-27571