CVE-2025-66474
XWiki vulnerable to remote code execution through insufficient protection against {{/html}} injection
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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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://github.com/xwiki/xwiki-rendering/security/advisories/GHSA-9xc6-c2rm-f27p
- https://github.com/xwiki/xwiki-platform/commit/12b780ccd5bca5fc8f74f46648d7e02fa04fbc11
- https://github.com/xwiki/xwiki-rendering/commit/9b71a2ee035815cfc29cebbfe81dbdd98f941d49
- https://jira.xwiki.org/browse/XRENDERING-693
- https://jira.xwiki.org/browse/XRENDERING-792
References (7)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
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