{"id":"CVE-2026-86732","title":"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","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 through the criteria parameter. Attackers can inject…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-94"],"vendor":"craftcms","product":"cms","affected":["cms >= 5.0.0-RC1 < 5.10.12"],"published":"2026-09-08","updated":"2026-09-10","sourceUpdated":"2026-09-10T14:17:09.963","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86732","references":[{"url":"https://github.com/craftcms/cms/security/advisories/GHSA-9wcj-wqqh-cqvg","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/craft-cms-before-5.10.12-remote-code-execution-via-element-index","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-10T13:54:03.530549Z"},"epss":0.0051,"epssPercentile":0.42369,"ingestedAt":"2026-09-08T15:33:26.987Z","slug":"CVE-2026-86732","body":"## Overview\n\nCraft 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}