Vulnerability Database

310,472

Total vulnerabilities in the database

CVE-2025-55073

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL.

  • Published: Nov 14, 2025
  • Updated: Nov 15, 2025
  • CVE: CVE-2025-55073
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.4
  • AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CWEs:

Software From Fixed in
mattermost / mattermost_server 10.5.0 10.5.12
mattermost / mattermost_server 10.11.0 10.11.4
mattermost / mattermost_server 10.12.0 10.12.1