{"id":"CVE-2026-55212","aliases":["GHSA-f97c-ph8j-8vff"],"url":"https://o3.security/vulnerability/CVE-2026-55212","summary":"Pimcore: Insufficient Permission Check on Class Definition Creation Endpoint Allows Privilege Escalation","details":"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.","published":"2026-07-09T20:53:36.900Z","modified":"2026-08-12T03:51:29.513923207Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"pimcore/studio-backend-bundle","fixedVersion":"2026.1.6"},{"ecosystem":"Packagist","name":"pimcore/studio-backend-bundle","fixedVersion":"2026.1.6"}],"fix":{"url":"https://github.com/pimcore/studio-backend-bundle/commit/d1a4788c0f159c360d550c34256c8abbbd633ae0","label":"pimcore/studio-backend-bundle@d1a4788"},"references":[{"type":"WEB","url":"https://github.com/pimcore/studio-backend-bundle/releases/tag/v2025.4.6"},{"type":"WEB","url":"https://github.com/pimcore/studio-backend-bundle/releases/tag/v2026.1.6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55212.json"},{"type":"ADVISORY","url":"https://github.com/pimcore/pimcore/security/advisories/GHSA-f97c-ph8j-8vff"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55212"},{"type":"FIX","url":"https://github.com/pimcore/studio-backend-bundle/commit/d1a4788c0f159c360d550c34256c8abbbd633ae0"},{"type":"FIX","url":"https://github.com/pimcore/studio-backend-bundle/pull/1886"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:29.513923207Z"}}