CVE-2025-53837 Details
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.
A vulnerability exists in XWiki Rendering versions prior to 14.10.2 and 15.0 RC1, allowing users who can edit their own profiles or other documents to execute arbitrary script macros, including Groovy and Python. This exploitation leads to remote code execution and unrestricted access to all wiki content. The issue arises because the rendering output is incorporated into HTML macros without proper escaping, enabling the closure of the HTML macro and the injection of script macros that are executed with programming rights. This vulnerability has been patched in XWiki versions 14.10.2 and 15.0 RC1 by ensuring that rendering output cannot close the surrounding HTML macro. A potential workaround involves manually adding escaping to the rendering output in wiki documents, although no comprehensive list of such instances is currently available.
Users can update to XWiki Rendering versions 14.10.2 or 15.0 RC1, where this vulnerability has been patched. For those using earlier versions, it is possible to manually escape rendering output in wiki documents, although this requires careful attention and is not universally applicable.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 18, 2026CISA-ADP
Assessed Sep 18, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/xwiki/xwiki-rendering/commit/92bc8095ed3acce15ab200c8525e1623b4898be5 | [email protected] | Source CodeVendor |
| https://github.com/xwiki/xwiki-rendering/releases/tag/xwiki-rendering-14.10.2 | [email protected] | Source CodeVendor |
| https://github.com/xwiki/xwiki-rendering/releases/tag/xwiki-rendering-15.0-rc-1 | [email protected] | Source CodeVendor |
| https://github.com/xwiki/xwiki-rendering/security/advisories/GHSA-26vp-8gxg-v4pg | [email protected] | AdvisoryRemedyVendor |
| https://jira.xwiki.org/browse/XRENDERING-693 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://jira.xwiki.org/browse/XWIKI-20313 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://jira.xwiki.org/browse/XWIKI-20327 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-95 | Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| XWiki Rendering | < 14.10.2 (semver) < 15.0-rc-1 |
CPE
Remediation
| |
| XWiki | All versions |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 21, 2026 | CVE Modified | CISA-ADP |
| Sep 18, 2026 | New CVE Received | [email protected] |