{"schema":"threatline.record/2","record":{"id":"CVE-2026-109392","aliases":[],"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.","categories":["Unclassified"],"product":"Pimcore","vendor":"Pimcore","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109392","source_modified_at":"2026-10-13T18:22:20.725Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Pimcore","vendor":"Pimcore","versions":[{"version":"0","lessThanOrEqual":"2026.3.1","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":5.1,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00171,"percentile":0.06172,"score_date":"2026-10-23"},"published_at":"2026-10-12T15:16:39.934Z","modified_at":"2026-10-13T18:22:20.725Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-109392","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-13T18:22:20.725Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-109392","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJCbgCKjMe","tags":["technical-description","exploit"]},{"source":"CVE List","url":"https://github.com/pimcore/pimcore/blob/v2026.3.1/models/DataObject/ClassDefinition/Data/ExternalImage.php#L169-L203","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/pimcore/admin-ui-classic-bundle/blob/2.3/templates/admin/data_object/data_object/preview_version.html.twig#L198","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/pimcore/pimcore","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/pimcore-through-2026.3.1-stored-xss-via-externalimage-field-version-preview","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-13T18:21:59.198477Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-13T18:22:20.725Z","content_hash":"789c6344f28a9cb6a1a9265c83e8d463f70b6924f0eb07be96152080a6db3bef"}}