Home/CVE/XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Prior to 17.4.8
CVE

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

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.

CRITICAL · CVSS 9.8 EPSS 0.0007
Act now
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-862Missing Authorization
▤

Affected Products & Versions

2
xwiki>= 17.0.0 and < 17.4.8
xwiki>= 17.5.0 and < 17.10.1
▤

Affected Packages

2
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.xwiki.platform:xwiki-platform-legacy-oldcore HIGH fixed in 17.4.8
Maven org.xwiki.platform:xwiki-platform-oldcore HIGH fixed in 17.4.8
⚠

Public Exploits & PoCs

2
pocjira.xwiki.org · XWIKI-23698jira.xwiki.org
pocjira.xwiki.org · XWIKI-23702jira.xwiki.org
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Apr 2026 · 04:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/xwiki/xwiki-platform/commit/9fe84da66184c05953df9466cf3a4acd15a46e63Patch
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-h259-74h5-4rh9PatchVendor Advisory
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