{"id":"CVE-2026-44011","summary":"Craft CMS: Potential authenticated Remote Code Execution via malicious attached Behavior","details":"Craft CMS is a content management system (CMS). From 4.0.0 to before 4.17.12 and 5.9.18, Craft CMS which contains an input-handling flaw in a Yii object creation path that let any authenticated user inject malicious configuration and execute arbitrary commands on the server. The request-controlled condition field layouts data is converted into a live FieldLayout object without a Component::cleanseConfig() boundary. Because Craft configures models before parent::__construct(), attacker-controlled special config keys can take effect during object creation, and FieldLayout initialization then triggers a same-request event. This vulnerability is fixed in 4.17.12 and 5.9.18.","aliases":["GHSA-qrgm-p9w5-rrfw"],"modified":"2026-08-04T11:30:58.765540740Z","published":"2026-05-12T20:25:08.183Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-479"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44011.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44011.json"},{"type":"ADVISORY","url":"https://github.com/craftcms/cms/security/advisories/GHSA-qrgm-p9w5-rrfw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44011"},{"type":"FIX","url":"https://github.com/craftcms/cms/commit/ab85ca7f5f926994f723f60584054a1f4c4c5de3"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/craftcms/cms","events":[{"introduced":"982efcd14d7e93a1a54f0905b61f242de6b53d8a"},{"fixed":"250aa0add8d0ea0bed537e5a85ad519309f2db6b"},{"introduced":"f6a8fb685d44e387435825e3a96809eeda4973a6"},{"fixed":"c14474f31e4b8e5464c92c8f0d84753c96fef288"}],"database_specific":{"extracted_events":[{"introduced":"4.0.0"},{"fixed":"4.17.12"},{"introduced":"5.0.0"},{"fixed":"5.9.18"}],"source":"AFFECTED_FIELD"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44011.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}