UpHeron
All vulnerabilities

Servers and applications

CVE-2025-4128

Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.

Severity
Medium 4.3
Published
11 Jun 2025
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.11.14, 10.5.5
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • From 9.11.0 before 9.11.14
  • From 10.5.0 before 10.5.5

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-4128
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-4128