CVE-2026-55220
CriticalCVSS 9.3Summary
Pimcore before versions 11.5.19, 12.3.10, and 2026.1.6 has a vulnerability in Hotspotimage::getDataFromResource() that passes the __hotspots column to Pimcore\Tool\Serialize::unserialize() without an allowed-classes restriction after JSON decoding fails. An attacker with the ability to write crafted PHP serialized bytes into that column can instantiate available classes and trigger magic methods, potentially leading to arbitrary file writes or code execution. This issue is fixed for Hotspotimage in versions 11.5.19, 12.3.10, and 2026.1.6.
Risk Assessment
The vulnerability allows an attacker to execute code on the server or write arbitrary files, potentially leading to full system compromise and data integrity violation.
Recommendation
Upgrade Pimcore to version 11.5.19, 12.3.10, or 2026.1.6 and restrict write access to the __hotspots column to trusted users.
Original NVD description (English source)
Pimcore is an Open Source Data & Experience Management Platform. Prior to 11.5.19, 12.3.10, and 2026.1.6, Pimcore\Model\DataObject\ClassDefinition\Data\Hotspotimage::getDataFromResource() in models/DataObject/ClassDefinition/Data/Hotspotimage.php passes the field __hotspots object-store column to Pimcore\Tool\Serialize::unserialize() without an allowed-classes restriction after JSON decoding fails. An attacker with a separate capability to write crafted PHP serialized bytes into that column can instantiate available classes and trigger magic methods when an affected DataObject is loaded, which can produce arbitrary file writes or code execution through bundled gadget chains. The related ImageGallery, Block, and Video callers use the same fallback pattern, but the identified June fix changes the Hotspotimage caller only. This issue is fixed for Hotspotimage in versions 11.5.19, 12.3.10, and 2026.1.6.