{"id":"CVE-2026-109308","revision":"3381ab0d484947b1923f0068619c7d96","records":[{"revision":"3381ab0d484947b1923f0068619c7d96","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-109308","aliases":[],"title":"Craft CMS 4.0.0 before 4.18.7 and 5.0.0 before 5.10.14 RCE via actionCacheUpdates Behavior Injection","description":"Craft CMS 4.0.0 before 4.18.7 and 5.0.0 before 5.10.14 passes the raw 'updates' request parameter in AppController::actionCacheUpdates to UpdatesModel without Component::cleanseConfig(), allowing behavior and event-handler injection. Authenticated control panel users with the performUpdates permission or Updates-utility access can supply 'as' or 'on' keys, such as an AttributeTypecastBehavior gadget, to execute arbitrary code.","state":0,"publishedAt":"2026-10-12T16:05:04.666+00:00","modifiedAt":"2026-10-13T15:47:12.028+00:00","affected":[{"ecosystem":"Vendor product","name":"cms","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"craftcms\",\n                    \"product\": \"cms\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"4.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"4.18.7\"\n                        },\n                        {\n                            \"version\": \"4.18.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"cms","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"craftcms\",\n                    \"product\": \"cms\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"5.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"5.10.14\"\n                        },\n                        {\n                            \"version\": \"5.10.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://github.com/craftcms/cms/security/advisories/GHSA-5m2g-hhqr-84pc","https://www.vulncheck.com/advisories/craft-cms-4.0.0-before-4.18.7-and-5.0.0-before-5.10.14-rce-via-actioncacheupdates-behavior-injection"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109308","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-109308","identifiers":["CVE-2026-109308"]},"retained":false,"historicalAffected":[]}],"coverage":[]}