CVE-2026-109392

Medium

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.

SeverityMedium

CVSS5.4

Exploit probability—

Product

Pimcore

PublishedOct 12, 2026

First seenOct 12, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
Pimcore Pimcore	v ≤ 2026.3.1	—

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