# CVE-2025-53835

## Summary

- **CVE ID:** CVE-2025-53835
- **Severity:** CRITICAL
- **CVSS Score:** 9.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H)
- **CWE:** CWE-79, CWE-80
- **Published:** Jul 14, 2025
- **Last Modified:** Mar 13, 2026

## 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 5.4.5 and prior to version 14.10, the XHTML syntax depended on the `xdom+xml/current` syntax which allows the creation of raw blocks that permit the insertion of arbitrary HTML content including JavaScript. This allows XSS attacks for users who can edit a document like their user profile (enabled by default). This has been fixed in version 14.10 by removing the dependency on the `xdom+xml/current` syntax from the XHTML syntax. Note that the `xdom+xml` syntax is still vulnerable to this attack. As it's main purpose is testing and its use is quite difficult, this syntax shouldn't be installed or used on a regular wiki. There are no known workarounds apart from upgrading.

## Affected Products

- xwiki — xwiki-rendering (>= 5.4.5, < 14.10)

## References

- [CNA](https://github.com/xwiki/xwiki-rendering/security/advisories/GHSA-w3wh-g4m9-783p)
- [CNA](https://github.com/xwiki/xwiki-rendering/commit/a4ca31f99f524b9456c64150d6f375984aa81ea7)
- [CNA](https://jira.xwiki.org/browse/XRENDERING-660)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.34%
- **EPSS Percentile:** 27.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._