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No exploitation reportedFix available

CVE-2025-53837

No exploitation reported by the sources we read.

  • Published2026-09-18
  • Fixed in14.10.2
  • WeaknessCWE-95

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-09-1816:17CVE publishedNVD

Versions per branch

OSV
xwiki-rendering-xml
BranchAffectedFixed in
14.10< 14.10.214.10.2

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • xwiki-rendering
    Affected
    • = < 14.10.2no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-09-18

Fix

  1. Update xwiki-rendering-xml to 14.10.2

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionnone2026-09-18
  • CNACVSS 3.19.9known since 2026-10-23
  • CNAweakness (CWE)CWE-95known since 2026-10-23
  • FIRST EPSSEPSS score1.5 %2026-11-12
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryCRITICAL2026-09-18

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
2026-09-18
Last Modified
2026-10-14
NVD status
Deferred
GitHub Advisory
GHSA-26vp-8gxg-v4pg

Frequently asked questions

What is CVE-2025-53837?

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.

Is CVE-2025-53837 actively exploited?

Active exploitation of CVE-2025-53837 has not been confirmed. Its EPSS score was 1.5% on 2026-11-12, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-53837?

CVE-2025-53837 has a CVSS v3 base score of 9.9 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

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