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

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

9.9 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

• CVE-2025-53837: 1.50% estimated exploitation activity in the next 30 days; percentile 74.34 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact 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 can be demonstrated by adding an object of type XWiki.UIExtensionClass to a document with content {{html wiki="true"}}~{~{~/~h~t~m~l~}~}~ ~{~{~c~a~c~h~e~}~}~{~{~g~r~o~o~v~y~}~}~p~r~i~n~t~l~n~(~1~)~{~{~/~g~r~o~o~v~y~}~}~{~{~/~c~a~c~h~e~}~}{{/html}}, extension point id org.xwiki.platform.html.head, extension id org.xwiki.myuser.test and extension scope "current user". When opening <xwiki-server/xwiki/bin/view/Main/?sheet=CKEditor.ContentSheet&xpage=plain where <xwiki-server is the URL of the XWiki installation, the output should…

Published by the source

18 Sep 2026, 15:05 UTC

Last modified by the source

18 Sep 2026, 15:15 UTC

Source last checked

26 Oct 2026, 16:55 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-26vp-8gxg-v4pg

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-26vp-8gxg-v4pg

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# Patch Next advisory brief: CVE-2025-53837

Advisory: org.xwiki.rendering:xwiki-rendering-xml has an Eval Injection issue
IDs: CVE-2025-53837, GHSA-26vp-8gxg-v4pg
Record: https://patchnext.com/advisories/cve-2025-53837 (revision 2, source checked 26 Oct 2026, 16:55 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.xwiki.rendering:xwiki-rendering-xml 14.10.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.xwiki.rendering:xwiki-rendering-xml: affected < 14.10.2; fixed in 14.10.2

## Suggested inspection (read-only)
- Maven org.xwiki.rendering:xwiki-rendering-xml: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.xwiki.rendering:xwiki-rendering-xml.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-26vp-8gxg-v4pg (OSV record GHSA-26vp-8gxg-v4pg lists affected ranges: Maven org.xwiki.rendering:xwiki-rendering-xml >=0 <14.10.2 (fixed))
- Verified: https://github.com/advisories/GHSA-26vp-8gxg-v4pg (GitHub-reviewed advisory GHSA-26vp-8gxg-v4pg lists affected ranges: Maven org.xwiki.rendering:xwiki-rendering-xml >=0 <14.10.2)

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