{"id":"CVE-2026-109392","revision":"ce1bae95dc234d13baf4aec61a4d6cb5","records":[{"revision":"ce1bae95dc234d13baf4aec61a4d6cb5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-109392","aliases":[],"title":"Pimcore through 2026.3.1 Stored XSS via ExternalImage Field Version Preview","description":"Pimcore through 2026.3.1 contains a stored cross-site scripting vulnerability that allows authenticated backend users to inject scripts by storing unescaped URLs in ExternalImage fields. Attackers with data object edit permission can store attribute-breaking payloads that execute JavaScript in the admin origin when other users open version preview or diff views.","state":0,"publishedAt":"2026-10-12T15:16:39.934+00:00","modifiedAt":"2026-10-13T18:22:20.725+00:00","affected":[{"ecosystem":"Vendor product","name":"Pimcore","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Pimcore\",\n                    \"product\": \"Pimcore\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"2026.3.1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:composer/pimcore/pimcore\",\n                    \"repo\": \"https://github.com/pimcore/pimcore\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","score":5.1,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4,"severity":"MEDIUM"}],"references":["https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJCbgCKjMe","https://github.com/pimcore/pimcore/blob/v2026.3.1/models/DataObject/ClassDefinition/Data/ExternalImage.php#L169-L203","https://github.com/pimcore/admin-ui-classic-bundle/blob/2.3/templates/admin/data_object/data_object/preview_version.html.twig#L198","https://github.com/pimcore/pimcore","https://www.vulncheck.com/advisories/pimcore-through-2026.3.1-stored-xss-via-externalimage-field-version-preview"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109392","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-109392","identifiers":["CVE-2026-109392"]},"retained":false,"historicalAffected":[]}],"coverage":[]}