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bdu:2026-05293

EUVD-2026-290502

fkie_cve-2026-33229

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Prior to 17.4.8 and 17.10.1, an improperly protected scripting API allows any user with script right to bypass the sandboxing of the Velocity scripting API and execute, e.g., arbitrary Python scripts, allowing full access to the XWiki instance and thereby compromising the confidentiality, integrity and availability of the whole instance. Note that script right already constitutes a high level of access that we don't recommend giving to untrusted users. This vulnerability is fixed in 17.4.8 and 17.10.1.

GHSA-h259-74h5-4rh9 — XWiki vulnerable to remote code execution with script right through unprotected Velocity scripting API

Affected: Maven: org.xwiki.platform:xwiki-platform-oldcore, Maven: org.xwiki.platform:xwiki-platform-legacy-oldcore

### Impact An improperly protected scripting API allows any user with script right to bypass the sandboxing of the Velocity scripting API and execute, e.g., arbitrary Python scripts, allowing full access to the XWiki instance and thereby compromising the confidentiality, integrity and availability of the whole instance. Note that script right already constitutes a high level of access that we don't recommend giving to untrusted users.

### Patches The vulnerability has been patched in XWiki 17.4.8 and 17.10.1 by requiring programming right to access the affected scripting API.

### Workarounds We're not aware of any workarounds except for being careful whom you grant script right.

### Attribution We thank Youssef Azefzaf for discovering and reporting this vulnerability.

WID-SEC-W-2026-1013 — xwiki: Schwachstelle ermöglicht Codeausführung

Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in xwiki ausnutzen, um beliebigen Programmcode auszuführen.