Vulnerability · Published Apr 8, 2026 · Assigned by GitHub_M
CVE-2026-33229XWiki Platform affected by remote code execution with script right through unprotected Velocity scripting API
Critical 9.8
In plain English
A critical-severity missing authorization in xwiki-platform-legacy-oldcore from org.xwiki.platform. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.xwiki.platform:xwiki-platform-legacy-oldcore | 17.4.8 | GHSA-h259-74h5-4rh9 |
| Maven | org.xwiki.platform:xwiki-platform-legacy-oldcore | 17.10.1 | GHSA-h259-74h5-4rh9 |
| Maven | org.xwiki.platform:xwiki-platform-oldcore | 17.4.8 | GHSA-h259-74h5-4rh9 |
| Maven | org.xwiki.platform:xwiki-platform-oldcore | 17.10.1 | GHSA-h259-74h5-4rh9 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| xwiki | xwiki-platform | >= 17.0.0-rc-1, < 17.4.8>= 17.5.0-rc-1, < 17.10.1 |
| org.xwiki.platform | xwiki-platform-legacy-oldcore | >= 17.0.0-rc-1, < 17.4.8>= 17.5.0-rc-1, < 17.10.1 |
| org.xwiki.platform | xwiki-platform-oldcore | >= 17.0.0-rc-1, < 17.4.8>= 17.5.0-rc-1, < 17.10.1 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-h259-74h5-4rh9 x_refsource_CONFIRM
- https://github.com/xwiki/xwiki-platform/commit/9fe84da66184c05953df9466cf3a4acd15a46e63 x_refsource_MISC
- https://jira.xwiki.org/browse/XWIKI-23698 x_refsource_MISC
- https://jira.xwiki.org/browse/XWIKI-23702 x_refsource_MISC