PatchSiren cyber security CVE debrief
CVE-2026-55212 pimcore CVE debrief
The Pimcore Studio API class definition creation endpoint has a permission issue. Prior to versions 2025.4.6 and 2026.1.6, the endpoint is guarded by object permission instead of class permission. This allows a standard editor-level user to create class definitions without admin privileges, potentially leading to unauthorized database table and PHP class file creation. The vulnerability exists due to incorrect permission checks, allowing low-privileged users to create class definitions.
- Vendor
- pimcore
- Product
- Unknown
- CVSS
- HIGH 7.1
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-07-09
- Original CVE updated
- 2026-07-10
- Advisory published
- 2026-07-09
- Advisory updated
- 2026-07-10
Who should care
Administrators and users of Pimcore, especially those with editor-level access, should be aware of this vulnerability and take steps to ensure their systems are updated to the latest versions. Pimcore operators should review deployment versions, assess exposure, and apply updates or mitigations. Vulnerability management and security teams should track this issue and verify Pimcore deployments.
Technical summary
The vulnerability exists in the Pimcore Studio API class definition creation endpoint POST /pimcore-studio/api/class/definition/configuration-view/detail/create. It is guarded by object permission instead of class permission, allowing standard editor-level users to create class definitions without admin privileges. This could lead to the creation of new database tables and PHP class files on the server. Additionally, missing API-layer UID format validation allows malformed UIDs to reach model-layer validation, potentially returning internal exceptions.
Defensive priority
High
Recommended defensive actions
- Update Pimcore to version 2025.4.6 or 2026.1.6
- Restrict access to the class definition creation endpoint
- Monitor for suspicious class definition creation activity
- Implement additional validation for UIDs
- Review compensating controls for exposed systems while remediation is scheduled and verified
- Check relevant monitoring, detection, and logs for exposed assets that need extra review
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
Evidence notes
The CVE record was published on 2026-07-09T21:16:56.150Z and was last modified on 2026-07-10T15:52:52.497Z. The NVD entry is currently Deferred. Evidence limits suggest that Pimcore versions prior to 2025.4.6 and 2026.1.6 are likely affected. Defenders should verify Pimcore deployment versions and review class definition creation permissions.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-09T21:16:56.150Z and has not been modified since then. The NVD entry is currently Deferred.