CVE-2026-55220

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

Published: Aug 28, 2026Updated: Sep 9, 2026 Sources: CVE List NVDCWE-502

N/ACVSS

NVD MITRE

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.

No summary for this CVE yet.

Weaknesses

CWE-502

Affected Products

pimcore

commercialaka pimcore cms

pimcore

Web & CMS Plugins

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

3 techniques

Execution

Initial Access

View detailed technique mapping

References

https://github.com/pimcore/pimcore/commit/b184c01bf11e213e601d965b4e96c8bb7248e980

github.com

https://github.com/pimcore/pimcore/pull/19181

github.com

https://github.com/pimcore/pimcore/releases/tag/v12.3.10

github.com

and 2 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-55220 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows