TI-2026-39898 Aliases CVE-2026-55220 GHSA-w23p-wrp7-ch38

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

MEDIUM 49CWE-502Published 2026-08-28 · Updated 2026-08-31

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0068 52nd percentileScored 2026-11-07

Fix Fixed pimcore (pimcore): 11.5.19, 12.3.10, 2026.1.6pimcore/pimcore (Packagist): 2026.1.6, 12.3.10

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
pimcore	pimcore	before 11.5.19; 12.0.0-RC1 to before 12.3.10; 2026.1.0 to before 2026.1.6	11.5.19, 12.3.10, 2026.1.6	Patch available	CNA
—	pimcore/pimcore (Packagist)	2026.1.0 to before 2026.1.6	2026.1.6	Patch available	GHSA-w23p-wrp7-ch38
—	pimcore/pimcore (Packagist)	before 12.3.10	12.3.10	Patch available	GHSA-w23p-wrp7-ch38

pimcore Vendorpimcore Affected before 11.5.19; 12.0.0-RC1 to before 12.3.10; 2026.1.0 to before 2026.1.6 Fixed in 11.5.19, 12.3.10, 2026.1.6 Patch available CNA
pimcore/pimcore (Packagist) Vendor— Affected 2026.1.0 to before 2026.1.6 Fixed in 2026.1.6 Patch available GHSA-w23p-wrp7-ch38
pimcore/pimcore (Packagist) Vendor— Affected before 12.3.10 Fixed in 12.3.10 Patch available GHSA-w23p-wrp7-ch38

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:pimcore:pimcore::::::::	—	—	pimcore

cpe:2.3:a:pimcore:pimcore:*:*:*:*:*:*:*:* Versions — — ·pimcore

Remediation

Fix · CNA pimcore (pimcore) Fixed in 11.5.19, 12.3.10, 2026.1.6
Fix · GHSA-w23p-wrp7-ch38 pimcore/pimcore (Packagist) Fixed in 2026.1.6 Advisory →
Fix · GHSA-w23p-wrp7-ch38 pimcore/pimcore (Packagist) Fixed in 12.3.10 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-55220
2026-10-03 Alias added: GHSA-w23p-wrp7-ch38

References

Other 6

TI-2026-18925 Pimcore has a Blind SQL Injection in Admin Search Find API due to an incomplete fix for CVE-2023-30848 CVSS 3.1HIGH 8.8
TI-2024-15667 Pimcore Admin Classic Bundle host header injection in the password reset CVSS 3.1HIGH 8.8
TI-2026-40161 Pimcore: Remote Code Execution via DataObject Class-Definition Field Name CVSS 3.1CRITICAL 9.9
TI-2026-18926 Pimcore ENV Variables and Cookie Informations are exposed in http_error_log CVSS 3.1HIGH 8.6
TI-2024-16853 Pimcore Host Header Injection in user invitation link CVSS 3.1CRITICAL 9.3
TI-2023-01489 SQL Injection in pimcore/pimcore CVSS 3.1HIGH 8.8

See all 171 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences