OCTOBER 7, 2026
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Case File

CVE-2025-53837

CRITICAL · CVSS 9.9 EPSS 0.64% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-18 · Last synced 2026-10-07

CyberRota Analysis

AI-Generated

XWiki Rendering is vulnerable due to improper handling of rendering output within HTML macros, allowing any user with profile editing capabilities to execute arbitrary Groovy and Python scripts, leading to remote code execution and unrestricted access to all wiki content. This critical vulnerability affects all versions prior to 14.10.2 and 15.0 RC1, making it imperative for organizations using XWiki to prioritize patching to mitigate potential exploitation. Users and administrators of XWiki should implement the available patch or consider workarounds to secure their environments against this severe threat.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
remote code execution code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2025-53837
Severity
CRITICAL
CVSS
9.9
EPSS
0.64%

Original NVD 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.