CVE-2025-53836: xwiki Code Injection

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). 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.

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CVSS v3.1 Score

9.9

CRITICAL

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

Weakness Type (CWE)

CWE-94 CWE-94

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
xwiki	xwiki	4.3 — 13.10.11
xwiki	xwiki	14.0 — 14.4.7
xwiki	xwiki	14.5 — 14.10
xwiki	xwiki	All
xwiki	xwiki	All
xwiki	xwiki	All
xwiki	xwiki	All

References

Advisories & Patches

https://github.com/xwiki/xwiki-rendering/commit/c73fa3ccd4ac59057e48e5d4325f659e78e8f86d

Exploits

https://jira.xwiki.org/browse/XRENDERING-689 https://jira.xwiki.org/browse/XWIKI-20375

Other References

https://github.com/xwiki/xwiki-rendering/security/advisories/GHSA-32mf-57h2-64x9 https://github.com/xwiki/xwiki-rendering/security/advisories/GHSA-32mf-57h2-64x9

Frequently Asked Questions

What is CVE-2025-53836? +

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. It has a CVSS v3.1 base score of 9.9 (CRITICAL).

How severe is CVE-2025-53836? +

CVE-2025-53836 has a CVSS v3.1 score of 9.9 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-53836? +

CVE-2025-53836 affects products from xwiki, specifically: xwiki. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-53836? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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