Pimcore Hotspotimage Unrestricted Deserial <11.5.19, 12.3.10, 2026.1.6
CVE-2026-55220 Published on August 28, 2026
Pimcore Hotspotimage getDataFromResource() unrestricted Serialize::unserialize over object-store column
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.
Vulnerability Analysis
CVE-2026-55220 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. 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 Marshaling, Unmarshaling Vulnerability?
The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.
CVE-2026-55220 has been classified to as a Marshaling, Unmarshaling vulnerability or weakness.
Products Associated with CVE-2026-55220
Want to know whenever a new CVE is published for Pimcore? stack.watch will email you.
Affected Versions
pimcore:- Version < 11.5.19 is affected.
- Version >= 12.0.0-RC1, < 12.3.10 is affected.
- Version >= 2026.1.0, < 2026.1.6 is affected.