GHSA-w844-4xmf-w7mwMediumCVSS 5.4
Pimcore through 2026.3.1 contains a stored cross-site scripting vulnerability that allows...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (7)
- https://nvd.nist.gov/vuln/detail/CVE-2026-109392
- 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://github.com/pimcore/pimcore/blob/v2026.3.1/models/DataObject/ClassDefinition/Data/ExternalImage.php#L169-L203
- https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJCbgCKjMe
- https://www.vulncheck.com/advisories/pimcore-through-2026.3.1-stored-xss-via-externalimage-field-version-preview
- https://github.com/advisories/GHSA-w844-4xmf-w7mw