---
cve: "CVE-2026-55634"
severity: "CRITICAL"
cvss: 9.9
epss: "0.4%"
vendor: "pimcore"
kev: false
exploited: false
published: "2026-08-28 20:18:29"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T14:34:28+02:00"
---

# CVE-2026-55634

> 9.9 CRITICAL · 🧪 PoC

## Beschreibung

Pimcore is an Open Source Data & Experience Management Platform. Prior to 11.5.19, 12.3.10, and 2026.1.6, the class-definition import endpoint /pimcore-studio/api/class/definition/configuration-view/detail/{id}/import accepts a DataObject field name that is emitted without an identifier allowlist by lib/DataObject/ClassBuilder/FieldDefinitionPropertiesBuilder.php into generated PHP properties and by models/DataObject/ClassDefinition/Helper/Dao.php into ALTER TABLE identifiers. An authenticated user with the objects permission can inject PHP syntax into the generated DataObject class, causing attacker-controlled code in generated var/classes/DataObject/.php files to run when an object of that class is instantiated, and can also inject SQL identifier content into schema-changing statements. The central models/DataObject/ClassDefinition/Data.php::setName() validation did not reject semicolons, braces, backticks, spaces, or other non-identifier characters. This issue is fixed in versions 11.5.19, 12.3.10, and 2026.1.6.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 71b2af87d1a50027d7a59cb9f41da1ef807d892f (Commit)
- ad60bad41946c33bebb4fd42e03b0a575759de02 (Commit)

## Referenzen

- <https://github.com/pimcore/pimcore/security/advisories/GHSA-9x44-4gxf-8c25>
- <https://github.com/pimcore/pimcore/pull/19183>
- <https://github.com/pimcore/pimcore/commit/a4f8c3cfee58b7d5fe4873d67782eff58dae9b9d>
- <https://github.com/advisories/GHSA-r2f4-ff2p-xc64>
- <https://github.com/pimcore/pimcore/releases/tag/v2026.1.6>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-55634) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_