{"id":"CVE-2026-86732","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-86732","summary":"Craft CMS versions before 5.10.12 contain a remote code execution vulnerability in the element-index endpoint that allows authenticated content editors to instantiate arbitrary classes…","details":"Craft CMS versions before 5.10.12 contain a remote code execution vulnerability in the element-index endpoint that allows authenticated content editors to instantiate arbitrary classes through the criteria parameter. Attackers can inject a malicious class via criteria[withTransforms][0][class] that reaches ImageTransforms::normalizeTransform(), then use a PHP gadget chain with yii\\rbac\\PhpManager to execute code by pointing itemFile to a request log containing PHP payload in the User-Agent header.","published":"2026-09-08T16:18:35.333","modified":"2026-09-08T16:18:35.333","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/craftcms/cms/security/advisories/GHSA-9wcj-wqqh-cqvg"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/craft-cms-before-5.10.12-remote-code-execution-via-element-index"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-08T16:18:35.333"}}