CVE-2026-109392 is a vulnerability in Pimcore
Published on October 12, 2026
Pimcore through 2026.3.1 Stored XSS via ExternalImage Field Version Preview
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.
Vulnerability Analysis
CVE-2026-109392 is exploitable with network access. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2026-109392. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2026-109392 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2026-109392
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Affected Versions
Pimcore:- Before and including 2026.3.1 is affected.