CVE-2025-66474

Name: CVE-2025-66474
Creator: NVD / NIST
Published: 2025-12-10T22:16:28.003+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.86%

Last modified Jun 17, 2026

CVE-2025-66474 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. XWiki Rendering is a generic rendering system that converts textual input in a given syntax (wiki syntax, HTML, etc) into another syntax (XHTML, etc). Versions 16.10.9 and below, 17.0.0-rc-1 through 17.4.2 and 17.5.0-rc-1 through 17.5.0 have insufficient protection against {{/html}} injection, which attackers can exploit through RCE. EPSS estimates a 0.86% chance of exploitation in the next 30 days.

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). Versions 16.10.9 and below, 17.0.0-rc-1 through 17.4.2 and 17.5.0-rc-1 through 17.5.0 have insufficient protection against {{/html}} injection, which attackers can exploit through RCE. Any user who can edit their own profile or any other document can execute arbitrary script macros, including Groovy and Python macros, which enable remote code execution as well as unrestricted read and write access to all wiki contents. This issue is fixed in versions 16.10.10, 17.4.3 and 17.6.0-rc-1.

Metrics

CVSS 3.1

8.8/10

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

CVSS 4.0

8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.86%

53.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Xwiki	Xwiki-Rendering	< 16.10.10
Xwiki	Xwiki-Rendering	>= 17.0.0, < 17.4.3
Xwiki	Xwiki-Rendering	17.5.0

References

https://github.com/xwiki/xwiki-platform/commit/12b780ccd5bca5fc8f74f46648d7e02fa04fbc11Patch
https://github.com/xwiki/xwiki-rendering/commit/9b71a2ee035815cfc29cebbfe81dbdd98f941d49Patch
https://github.com/xwiki/xwiki-rendering/security/advisories/GHSA-9xc6-c2rm-f27pPatch, Vendor Advisory
https://jira.xwiki.org/browse/XRENDERING-693Exploit, Patch, Vendor Advisory
https://jira.xwiki.org/browse/XRENDERING-792Exploit, Patch, Vendor Advisory
https://jira.xwiki.org/browse/XRENDERING-793Exploit, Patch, Vendor Advisory
https://jira.xwiki.org/browse/XWIKI-23378Patch, Vendor Advisory
https://jira.xwiki.org/browse/XRENDERING-693Exploit, Patch, Vendor Advisory
https://jira.xwiki.org/browse/XRENDERING-792Exploit, Patch, Vendor Advisory
https://jira.xwiki.org/browse/XRENDERING-793Exploit, Patch, Vendor Advisory

Timeline

Published: Dec 10, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-66474?

How severe is CVE-2025-66474?

CVE-2025-66474 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.

How do I fix CVE-2025-66474?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-66474?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST