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Vulnerability · Published Sep 18, 2026 · Assigned by GitHub_M

CVE-2025-53837org.xwiki.rendering:xwiki-rendering-xml has an Eval Injection issue

Critical 9.9

In plain English

A critical-severity security flaw in xwiki-rendering from xwiki. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)1.5%top 25.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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). Prior to versions 14.10.2 and 15.0 RC1, any user who can edit their own user profile or any other document can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The reason is that rendering output is included as content of HTML macros without further escaping and it is thus possible to close the HTML macro and inject script macros that are executed with programming rights. This has been patched in XWiki 14.10.2 and 15.0 RC1 by making sure that rendering output cannot close the surrounding HTML macro. A possible workaround is available. It is, in principle, possible to add escaping to all places where rendering output is used in wiki documents, but at the moment there is no list of them.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenorg.xwiki.rendering:xwiki-rendering-xml14.10.2GHSA-26vp-8gxg-v4pg

Affected products (as reported)

VendorProductVersions
xwiki xwiki-rendering < 14.10.2

Weakness: CWE-95 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References