CVE-2025-66474

High

Description

XWiki Rendering is a generic rendering system that converts textual input in a given syntax (wiki syntax, HTML, etc) into another syntax (XHTML, etc). Versions 16.10.9 and below, 17.0.0-rc-1 through 17.4.2 and 17.5.0-rc-1 through 17.5.0 have insufficient protection against {{/html}} injection, which attackers can exploit through RCE. Any user who can edit their own profile or any other document can execute arbitrary script macros, including Groovy and Python macros, which enable remote code execution as well as unrestricted read and write access to all wiki contents. This issue is fixed in versions 16.10.10, 17.4.3 and 17.6.0-rc-1.

SeverityHigh
CVSS8.8
Exploit probability—
ProductXwiki-rendering
PublishedDec 10, 2025
First seenDec 10, 2025
Weakness typeCWE-95CWE-95

How to fix

Update
  • xwiki xwiki-rendering16.10.10, 17.4.3 or later
  • org.xwiki.rendering:xwiki-rendering-xml16.10.10, 17.4.3, 17.6.0-rc-1 or later

Affected products

ProductAffected versionsFixed in
xwiki xwiki-renderingv < 16.10.10, 17.0.0 ≤ v < 17.4.3, 17.5.016.10.10, 17.4.3
org.xwiki.rendering:xwiki-rendering-xmlMavenv < 16.10.10, 17.0.0-rc-1 ≤ v < 17.4.3, 17.5.0-rc-1 ≤ v < 17.6.0-rc-116.10.10, 17.4.3, 17.6.0-rc-1

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