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Vulnerability · Published Jul 9, 2026 · Assigned by GitHub_M

CVE-2026-55212Pimcore: Insufficient Permission Check on Class Definition Creation Endpoint Allows Privilege Escalation

High 7.1

In plain English

A high-severity security flaw in pimcore from pimcore. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.4%top 71.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

Pimcore is an Open Source Data & Experience Management Platform. Prior to 2025.4.6 and 2026.1.6, the Studio API class definition creation endpoint POST /pimcore-studio/api/class/definition/configuration-view/detail/create is guarded by the objects permission instead of the classes permission, allowing a standard editor-level user to create class definitions without admin privileges. Class definition creation generates new database tables and PHP class files on the server, and missing API-layer UID format validation allows malformed UIDs to reach model-layer validation and return internal exceptions. This issue is fixed in versions 2025.4.6 and 2026.1.6.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Packagistpimcore/studio-backend-bundle2026.1.6GHSA-f97c-ph8j-8vff
Packagistpimcore/studio-backend-bundle2026.1.6GHSA-f97c-ph8j-8vff

Affected products (as reported)

VendorProductVersions
pimcore pimcore >= 2026.1.0, < 2026.1.6< 2025.4.6

Weakness: CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

References