Pimcore: Insufficient Permission Check on Class Definition Creation Endpoint Allows Privilege Escalation
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-285.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| pimcore | pimcore | 2026.1.0 to before 2026.1.6; before 2025.4.6 | 2026.1.6, 2025.4.6 | Patch available | CNA |
| — | pimcore/studio-backend-bundle (Packagist) | before 2026.1.6 | 2026.1.6 | Patch available | GHSA-f97c-ph8j-8vff |
| — | pimcore/studio-backend-bundle (Packagist) | 2026.1.0 to before 2026.1.6 | 2026.1.6 | Patch available | GHSA-f97c-ph8j-8vff |
- pimcore Vendorpimcore Affected 2026.1.0 to before 2026.1.6; before 2025.4.6 Fixed in 2026.1.6, 2025.4.6 Patch available CNA
- pimcore/studio-backend-bundle (Packagist) Vendor— Affected before 2026.1.6 Fixed in 2026.1.6 Patch available GHSA-f97c-ph8j-8vff
- pimcore/studio-backend-bundle (Packagist) Vendor— Affected 2026.1.0 to before 2026.1.6 Fixed in 2026.1.6 Patch available GHSA-f97c-ph8j-8vff
Remediation
- Fix · CNA pimcore (pimcore) Fixed in 2026.1.6, 2025.4.6
- Fix · GHSA-f97c-ph8j-8vff pimcore/studio-backend-bundle (Packagist) Fixed in 2026.1.6 Advisory →
- Fix · GHSA-f97c-ph8j-8vff pimcore/studio-backend-bundle (Packagist) Fixed in 2026.1.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-55212
- 2026-10-03 Alias added: GHSA-f97c-ph8j-8vff
References
Other 6
- https://github.com/pimcore/pimcore/security/advisories/GHSA-f97c-ph8j-8vff
- https://github.com/pimcore/studio-backend-bundle/pull/1886
- https://github.com/pimcore/studio-backend-bundle/commit/d1a4788c0f159c360d550c34256c8abbbd633ae0
- 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
More pimcore vulnerabilities
- TI-2026-18925 Pimcore has a Blind SQL Injection in Admin Search Find API due to an incomplete fix for CVE-2023-30848 CVSS 3.1HIGH 8.8
- TI-2024-15667 Pimcore Admin Classic Bundle host header injection in the password reset CVSS 3.1HIGH 8.8
- TI-2026-40161 Pimcore: Remote Code Execution via DataObject Class-Definition Field Name CVSS 3.1CRITICAL 9.9
- TI-2026-18926 Pimcore ENV Variables and Cookie Informations are exposed in http_error_log CVSS 3.1HIGH 8.6
- TI-2024-16853 Pimcore Host Header Injection in user invitation link CVSS 3.1CRITICAL 9.3
- TI-2023-01489 SQL Injection in pimcore/pimcore CVSS 3.1HIGH 8.8
Sources
- CVE-2026-55212 · CVE Program
- CVE-2026-55212 · NVD
- FIRST EPSS
- GHSA-f97c-ph8j-8vff · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences