---
id: CVE-2026-55634
title: Pimcore is an Open Source Data & Experience Management Platform
summary: >-
  Pimcore is an Open Source Data & Experience Management Platform. Prior to
  11.5.19, 12.3.10, and 2026.1.6, the class-definition import endpoint
  /pimcore-studio/api/class/definition/configuration-view/detail/{id}/import
  accepts a DataObjec…
severity: critical
cvss: 9.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-89
  - CWE-94
vendor: pimcore
product: pimcore/pimcore
affected:
  - pimcore/pimcore <= 12.3.9
  - 'pimcore/pimcore >= 2026.1.0, <= 2026.1.5'
patched:
  - pimcore/pimcore 12.3.10
  - pimcore/pimcore 2026.1.6
published: '2026-08-28'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:09:13.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55634'
references:
  - url: 'https://github.com/advisories/GHSA-r2f4-ff2p-xc64'
    label: security-advisories@github.com
  - url: >-
      https://github.com/pimcore/pimcore/commit/a4f8c3cfee58b7d5fe4873d67782eff58dae9b9d
    label: security-advisories@github.com
  - url: 'https://github.com/pimcore/pimcore/pull/19183'
    label: security-advisories@github.com
  - url: 'https://github.com/pimcore/pimcore/releases/tag/v2026.1.6'
    label: security-advisories@github.com
  - url: 'https://github.com/pimcore/pimcore/security/advisories/GHSA-9x44-4gxf-8c25'
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-r2f4-ff2p-xc64'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-9x44-4gxf-8c25'
tags:
  - nvd
  - ghsa
  - composer
epss: 0.0065
epssPercentile: 0.48967
aliases:
  - GHSA-9x44-4gxf-8c25
ecosystem: composer
ingestedAt: '2026-08-28T19:24:18.749Z'
---

## Overview

Pimcore is an Open Source Data & Experience Management Platform. Prior to 11.5.19, 12.3.10, and 2026.1.6, the class-definition import endpoint /pimcore-studio/api/class/definition/configuration-view/detail/{id}/import accepts a DataObject field name that is emitted without an identifier allowlist by lib/DataObject/ClassBuilder/FieldDefinitionPropertiesBuilder.php into generated PHP properties and by models/DataObject/ClassDefinition/Helper/Dao.php into ALTER TABLE identifiers. An authenticated user with the objects permission can inject PHP syntax into the generated DataObject class, causing attacker-controlled code in generated var/classes/DataObject/.php files to run when an object of that class is instantiated, and can also inject SQL identifier content into schema-changing statements. The central models/DataObject/ClassDefinition/Data.php::setName() validation did not reject semicolons, braces, backticks, spaces, or other non-identifier characters. This issue is fixed in versions 11.5.19, 12.3.10, and 2026.1.6.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-55634)

Affected packages:

- `pimcore/pimcore <= 12.3.9`
- `pimcore/pimcore >= 2026.1.0, <= 2026.1.5`

Patched in:

- `pimcore/pimcore 12.3.10`
- `pimcore/pimcore 2026.1.6`

Source: https://github.com/advisories/GHSA-9x44-4gxf-8c25