{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"10.11.0","last_affected":"10.11.4"},{"introduced":"10.12.0","last_affected":"10.12.1"},{"introduced":"10.5.0","last_affected":"10.5.12"},{"introduced":"11.0.0","last_affected":"11.0.2"}],"component":"github.com/mattermost/mattermost","cve_ids":["CVE-2025-12756"],"ecosystem":"Go","epss":0.00196,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-p6gj-jc38-x2m7","id":"tcs_01M5KFH0D9J5VVTG238JK4T5WE","modified_at":"2025-12-03T19:43:25.608785Z","published_at":"2025-12-01T21:30:26Z","references":["https://osv.dev/vulnerability/GHSA-p6gj-jc38-x2m7","https://nvd.nist.gov/vuln/detail/CVE-2025-12756","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GHSA-p6gj-jc38-x2m7#Go/github.com/mattermost/mattermost","url":"https://osv.dev/vulnerability/GHSA-p6gj-jc38-x2m7"}],"summary":"Mattermost fails to validate user permissions when deleting comments in Boards"}