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VulnerabilityPublished Updated

CVE-2025-53837: xwiki-rendering · Eval Injection

Affects xwiki-renderingSource CVE Database V5

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Not known to be exploited · CVSS 9.9 Critical : upgrade to 14.10.2 as a priority.

Data as of 2 Nov 2026, 22:57 UTC

CVSS 3.1 base score
9.9Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.5% chance of exploitation in 30 days – higher than 74% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 14.10.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

What to do

Upgrade xwiki-rendering and org.xwiki/xwiki-rendering to 14.10.2.

Affected software

ProductAffectedFixed in
xwikixwiki-renderingAffected
  • <14.10.2
Fixed in
  • 14.10.2
Mavenorg.xwiki/xwiki-renderingpkg:maven/org.xwiki/xwiki-renderingOther threatsAffected
  • <14.10.2
Fixed in
  • 14.10.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

This vulnerability is patched in xwiki-rendering versions 14.10.2 and 15.0 RC1. Users should upgrade to these or later versions to remediate the issue. A workaround is available but not detailed here; it involves adding escaping to rendering output in wiki documents. Since no comprehensive list of affected rendering output locations exists, upgrading is the recommended mitigation.

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.

References

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