{"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-2026-28697"],"ecosystem":"Packagist","epss":0.01111,"exploited":false,"fixed_versions":["5.9.0-beta.1","4.17.0-beta.1"],"ghsa_id":"GHSA-v47q-jxvr-p68x","id":"tcs_01M5KF8SAN553J55RJEKXCDS83","modified_at":"2026-03-04T18:48:45.543042Z","published_at":"2026-03-03T21:00:16Z","references":["https://osv.dev/vulnerability/GHSA-v47q-jxvr-p68x","https://github.com/craftcms/cms/security/advisories/GHSA-v47q-jxvr-p68x","https://nvd.nist.gov/vuln/detail/CVE-2026-28697","https://github.com/craftcms/cms/pull/18216","https://github.com/craftcms/cms/pull/18219","https://github.com/craftcms/cms/commit/9dc2a4a3ec8e9cd5e8c0d1129f36371437519197","https://github.com/craftcms/cms"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"GHSA-v47q-jxvr-p68x","url":"https://osv.dev/vulnerability/GHSA-v47q-jxvr-p68x"},{"source":"nvd","source_id":"CVE-2026-28697","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28697"}],"summary":"Craft CMS Vulnerable to Authenticated RCE via \"craft.app.fs.write()\" in Twig Templates"}