{"action":"Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20260501142004-99b73d4c4acf or later.","affected":[{"fixed":"8.0.0-20260501142004-99b73d4c4acf","introduced":"8.0.0-20250731163400-5b955468ea1e"}],"component":"github.com/mattermost/mattermost/server/v8","cve_ids":["CVE-2026-6739"],"ecosystem":"Go","epss":0.00257,"exploited":false,"fixed_versions":["8.0.0-20260501142004-99b73d4c4acf"],"ghsa_id":"GHSA-m2w9-h2mm-79qr","id":"tcs_01M5KFF1GMT3BDB2GF062PNQ1P","modified_at":"2026-09-10T03:51:08.919891159Z","published_at":"2026-06-12T18:31:59Z","references":["https://osv.dev/vulnerability/GHSA-m2w9-h2mm-79qr","https://nvd.nist.gov/vuln/detail/CVE-2026-6739","https://github.com/mattermost/mattermost/pull/36197","https://github.com/mattermost/mattermost/pull/36377","https://github.com/mattermost/mattermost/pull/36379","https://github.com/mattermost/mattermost/pull/36380","https://github.com/mattermost/mattermost/pull/36382","https://github.com/mattermost/mattermost/commit/2c89c2f6768fbe4dfd57a21ca38c0aecead8d4a8","https://github.com/mattermost/mattermost/commit/5e159647b16e571b327ac6882f32eae42971f540","https://github.com/mattermost/mattermost/commit/8000e5933526f4fd66b92131db3a1b1f4520dbae","https://github.com/mattermost/mattermost/commit/f0a390b96e4c730daedbaf5190684776730218c7","https://github.com/mattermost/mattermost","https://github.com/mattermost/mattermost/releases/tag/v10.11.16","https://github.com/mattermost/mattermost/releases/tag/v11.5.5","https://github.com/mattermost/mattermost/releases/tag/v11.6.2","https://github.com/mattermost/mattermost/releases/tag/v11.7.0","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":6.7},"sources":[{"source":"osv","source_id":"GHSA-m2w9-h2mm-79qr#Go/github.com/mattermost/mattermost/server/v8","url":"https://osv.dev/vulnerability/GHSA-m2w9-h2mm-79qr"}],"summary":"Mattermost doesn't require system-level permission when patching protected default system roles"}