What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-09 · updated 2026-07-10
• Weakness: CWE-285

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 products

• pimcore/pimcore: from 2026.1.0, < 2026.1.6; before 2025.4.6

References

• https://github.com/pimcore/pimcore/security/advisories/GHSA-f97c-ph8j-8vff
• https://github.com/pimcore/studio-backend-bundle/commit/d1a4788c0f159c360d550c34256c8abbbd633ae0
• https://github.com/pimcore/studio-backend-bundle/pull/1886
• https://github.com/pimcore/studio-backend-bundle/releases/tag/v2025.4.6
• https://github.com/pimcore/studio-backend-bundle/releases/tag/v2026.1.6
• https://github.com/pimcore/pimcore/security/advisories/GHSA-f97c-ph8j-8vff

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