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Fencer Vulns
critical 10.0

CVE-2025-53836 json

XWiki Rendering is vulnerable to RCE attacks when processing nested macros

published 2025-07-14 15 mo ago modified 2026-09-10 1 mo ago also EUVD-2025-21398 , GHSA-32mf-57h2-64x9

cvss
10.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

XWiki Rendering is a generic rendering system that converts textual input in a given syntax (wiki syntax, HTML, etc) into another syntax (XHTML, etc). Starting in version 4.2-milestone-1 and prior to versions 13.10.11, 14.4.7, and 14.10, the default macro content parser doesn't preserve the restricted attribute of the transformation context when executing nested macros. This allows executing macros that are normally forbidden in restricted mode, in particular script macros. The cache and chart macros that are bundled in XWiki use the vulnerable feature. This has been patched in XWiki 13.10.11, 14.4.7 and 14.10. To avoid the exploitation of this bug, comments can be disabled for untrusted users until an upgrade to a patched version has been performed. Note that users with edit rights will still be able to add comments via the object editor even if comments have been disabled.

Patch / fix

  • maven org.xwiki.rendering:xwiki-rendering-transformation-macro 13.10.11, 14.4.7, 14.10
  • org.xwiki.rendering xwiki-rendering-transformation-macro 13.10.11, 14.4.7, 14.10
  • xwiki rendering 13.10.11, 14.4.7, 14.10
  • xwiki xwiki-rendering 13.10.11, 14.4.7, 14.10

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
15 mo ago

Exploit prediction

0.64% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/xwiki/xwiki-rendering/security/advisories/GHSA-32mf-57h2-64x9 referenced PoC, tagged "exploit" by a source, unverified
  • jira.xwiki.org https://jira.xwiki.org/browse/XRENDERING-689 referenced PoC, tagged "exploit" by a source, unverified
  • jira.xwiki.org https://jira.xwiki.org/browse/XWIKI-20375 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven org.xwiki.rendering:xwiki-rendering-transformation-macro
>=4.2-milestone-1, <13.10.11
>=14.0, <14.4.7
>=14.5, <14.10
13.10.11
14.4.7
14.10

Affected products

  • xwiki xwiki-rendering

Classification

Weakness
  • CWE-863 Incorrect Authorization
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.