{"action":"Upgrade craftcms/cms to 5.9.21 or later.","affected":[{"fixed":"5.9.21","introduced":"5.0.0-RC1"}],"component":"craftcms/cms","cve_ids":["CVE-2026-50279"],"ecosystem":"Packagist","epss":0.00364,"exploited":false,"fixed_versions":["5.9.21"],"ghsa_id":"GHSA-qq2c-2q8j-jh27","id":"tcs_01M5KF7G6YSEDZDGNWQHB88QYP","modified_at":"2026-09-10T03:50:52.940581232Z","published_at":"2026-07-02T18:45:28Z","references":["https://osv.dev/vulnerability/GHSA-qq2c-2q8j-jh27","https://github.com/craftcms/cms/security/advisories/GHSA-qq2c-2q8j-jh27","https://nvd.nist.gov/vuln/detail/CVE-2026-50279","https://github.com/craftcms/cms/commit/9cc493be8b414d7116c7f2bc2a6d0926e73f1248","https://github.com/craftcms/cms"],"severity":{"label":"high","score":7.6},"sources":[{"source":"osv","source_id":"GHSA-qq2c-2q8j-jh27","url":"https://osv.dev/vulnerability/GHSA-qq2c-2q8j-jh27"},{"source":"nvd","source_id":"CVE-2026-50279","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50279"}],"summary":"Craft CMS: Authorship spoofing in `entries/save-entry` via pre-check/post-mutation authorization gap"}