CVE-2026-26000: XWiki

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Prior to 17.9.0, 17.4.6, and 16.10.13, it's possible using comments to inject CSS that would transform the full wiki in a link area leading to a malicious page. This vulnerability is fixed in 17.9.0, 17.4.6, and 16.10.13.

Affected products

• XWiki XWiki: before 16.10.13 (fixed in 16.10.13); from 17.0.0, before 17.4.6 (fixed in 17.4.6); from 17.5.0, before 17.9.0 (fixed in 17.9.0)

Published 2026-02-12. Last modified 2026-06-17.