{"id":"CVE-2026-109392","summary":"Pimcore through 2026.3.1 Stored XSS via ExternalImage Field Version Preview","details":"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.","modified":"2026-10-15T02:31:11.374327233Z","published":"2026-10-12T15:16:39.934Z","database_specific":{"cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109392.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109392.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109392"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/pimcore-through-2026.3.1-stored-xss-via-externalimage-field-version-preview"},{"type":"PACKAGE","url":"https://github.com/pimcore/pimcore"},{"type":"ARTICLE","url":"https://github.com/pimcore/admin-ui-classic-bundle/blob/2.3/templates/admin/data_object/data_object/preview_version.html.twig#L198"},{"type":"ARTICLE","url":"https://github.com/pimcore/pimcore/blob/v2026.3.1/models/DataObject/ClassDefinition/Data/ExternalImage.php#L169-L203"},{"type":"EVIDENCE","url":"https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJCbgCKjMe"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pimcore/pimcore","events":[{"introduced":"0"},{"fixed":"a7e728c2f61705d484590c9876c114c0b4899feb"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"2026.3.1"},{"fixed":"2026.3.1"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["v2026.3.0","v2026.2.1","v2026.2.0","v2026.1.0","v12.3.0","v12.2.1","v12.2.0","v12.1.0","v12.0.0","v12.0.0-RC2","v12.0.0-RC1","v11.5.0-RC2","v11.5.0-RC1","v11.4.0","v11.4.0-RC1","v11.3.0","v11.3.0-RC2","v11.3.0-RC1","v11.2.1","v11.2.0","v11.1.0-RC1","v11.0.0","v11.0.0-RC2","v11.0.0-RC1","v11.0.0-BETA1","v11.0.0-ALPHA8","v11.0.0-ALPHA7","v11.0.0-ALPHA6","v11.0.0-ALPHA5","v11.0.0-ALPHA4","v11.0.0-ALPHA3","v11.0.0-ALPHA2","v11.0.0-ALPHA1","v10.5.0","v10.4.0","v10.3.0","v10.2.1","v10.2.0","v10.1.0","v10.0.0","v10.0.0-BETA4","v10.0.0-BETA3","v10.0.0-BETA2","v10.0.0-BETA1","v6.8.0","v6.7.0","v6.6.4","v6.6.3","v6.6.2","v6.6.1","v6.6.0","v6.5.3","v6.5.2","v6.5.1","v6.5.0","v6.4.2","v6.4.1","v6.4.0","v6.3.6","v6.3.5","v6.3.4","v6.3.3","v6.3.2","v6.3.1","v6.3.0","v6.2.3","v6.2.2","v6.2.1","v6.2.0","v6.1.2","v6.1.1","v6.1.0","v6.0.5","v6.0.4","v6.0.3","v6.0.2","v6.0.1","v6.0.0","v5.8.3","v5.8.2","v5.8.1","v5.8.0","v5.7.3","v5.7.2","v5.7.1","v5.7.0","v5.6.3","v5.5.4","v5.5.2","v5.5.1","v5.5.0","v5.4.4","v5.4.3","v5.4.2","v5.4.1","v5.4.0","v5.3.1","v5.3.0","v5.2.3","v5.2.0","v5.1.3","v5.1.2","v5.1.1","v5.1.0","v5.1.0-alpha","v5.0.4","v5.0.3","v5.0.2","v5.0.1","v5.0.0","v5.0.0-RC","4.4.3","4.4.2","4.4.1","4.4.0","4.3.1","4.2.0","4.1.3","4.1.2","4.1.1","4.1.0","4.0.1","4.0.0","3.1.1","3.1.0","3.0.6","3.0.5","3.0.4","3.0.3","3.0.2","3.0.1","3.0.0","2.3.0","2.2.2","2.2.1","2.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109392.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}