Pimcore up to 11.5.18/12.3.9/2026.1.5 Hotspotimage Hotspotimage.php getDataFromResource __hotspots deserialization

Summaryinfo

A vulnerability described as critical has been identified in Pimcore up to 11.5.18/12.3.9/2026.1.5. The affected element is the function Pimcore\Model\DataObject\ClassDefinition\Data\Hotspotimage::getDataFromResource of the file models/DataObject/ClassDefinition/Data/Hotspotimage.php of the component Hotspotimage. Such manipulation of the argument __hotspots leads to deserialization. This vulnerability is uniquely identified as CVE-2026-55220. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Pimcore up to 11.5.18/12.3.9/2026.1.5 and classified as critical. Affected by this issue is the function Pimcore\Model\DataObject\ClassDefinition\Data\Hotspotimage::getDataFromResource of the file models/DataObject/ClassDefinition/Data/Hotspotimage.php of the component Hotspotimage. The manipulation of the argument __hotspots with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-55220 since 06/16/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

By approaching the search of inurl:models/DataObject/ClassDefinition/Data/Hotspotimage.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 11.5.19, 12.3.10 or 2026.1.6 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Information Management Software

Name

• Pimcore

Version

• 11.5.0
• 11.5.1
• 11.5.2
• 11.5.3
• 11.5.4
• 11.5.5
• 11.5.6
• 11.5.7
• 11.5.8
• 11.5.9
• 11.5.10
• 11.5.11
• 11.5.12
• 11.5.13
• 11.5.14
• 11.5.15
• 11.5.16
• 11.5.17
• 11.5.18
• 12.3.0
• 12.3.1
• 12.3.2
• 12.3.3
• 12.3.4
• 12.3.5
• 12.3.6
• 12.3.7
• 12.3.8
• 12.3.9
• 2026.1.0
• 2026.1.1
• 2026.1.2
• 2026.1.3
• 2026.1.4
• 2026.1.5

License

• open-source

Website

• Product: https://github.com/pimcore/pimcore/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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