{"action":"Upgrade craftcms/cms to 4.17.0-beta.1 or later.","affected":[{"fixed":"5.9.0-beta.1","introduced":"5.0.0-RC1"},{"fixed":"4.17.0-beta.1","introduced":"4.0.0-RC1"}],"component":"craftcms/cms","cve_ids":["CVE-2026-28781"],"ecosystem":"Packagist","epss":0.00478,"exploited":false,"fixed_versions":["5.9.0-beta.1","4.17.0-beta.1"],"ghsa_id":"GHSA-2xfc-g69j-x2mp","id":"tcs_01M5KESCQYYRDZXW44E6SXR657","modified_at":"2026-03-04T18:48:54.065623Z","published_at":"2026-03-03T21:00:51Z","references":["https://osv.dev/vulnerability/GHSA-2xfc-g69j-x2mp","https://github.com/craftcms/cms/security/advisories/GHSA-2xfc-g69j-x2mp","https://nvd.nist.gov/vuln/detail/CVE-2026-28781","https://github.com/craftcms/cms/commit/830b403870cd784b47ae42a3f5a16e7ac2d7f5a8","https://github.com/craftcms/cms/commit/c6dcbdffaf6ab3ffe77d317336684d83699f4542","https://github.com/craftcms/cms"],"severity":{"label":"medium"},"sources":[{"source":"osv","source_id":"GHSA-2xfc-g69j-x2mp","url":"https://osv.dev/vulnerability/GHSA-2xfc-g69j-x2mp"}],"summary":"Craft CMS: Entries Authorship Spoofing via Mass Assignment"}