CVE-2026-55220: Pimcore Hotspotimage getDataFromResource() unrestricted Serialize::unserialize over object-store column

Critical severity · published Aug 28, 2026

CVE-2026-55220

Pimcore Hotspotimage getDataFromResource() unrestricted Serialize::unserialize over object-store column

9.3

CVSS

0.7%

EPSS

On KEV

Description

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.

Exploitation

Is it being used?

Exploit prediction (EPSS)0.7% · higher than 52% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

pimcore · pimcore

< 11.5.19; >= 12.0.0-RC1, < 12.3.10; >= 2026.1.0, < 2026.1.6 · source: vendor

Affected product

pimcore