XWiki vulnerable to remote code execution through insufficient protection against {{/html}} injection

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-66474
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-10 22:16:28 UTC
Updated2026-09-25 23:10:00 UTC
DescriptionXWiki 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.

Risk And Classification

Primary CVSS: v4.0 8.7 HIGH from [email protected]

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

Problem Types: CWE-95 | CWE-94 | CWE-95 CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary8.7HIGHCVSS: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/C...
4.0CNADECLARED8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Xwiki Xwiki-rendering All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Xwiki Xwiki-rendering affected < 16.10.10 Not specified
CNA Xwiki Xwiki-rendering affected >= 17.0.0-rc-1, < 17.4.3 Not specified
CNA Xwiki Xwiki-rendering affected >= 17.5.0-rc-1, < 17.6.0-rc-1 Not specified

References

ReferenceSourceLinkTags
jira.xwiki.org/browse/XWIKI-23378 [email protected] jira.xwiki.org Patch, Vendor Advisory
github.com/xwiki/xwiki-platform/commit/12b780ccd5bca5fc8f74f46648d7e02fa... [email protected] github.com Patch
github.com/xwiki/xwiki-rendering/commit/9b71a2ee035815cfc29cebbfe81dbdd9... [email protected] github.com Patch
jira.xwiki.org/browse/XRENDERING-792 134c704f-9b21-4f2e-91b3-4a467353bcc0 jira.xwiki.org Exploit, Patch, Vendor Advisory
jira.xwiki.org/browse/XRENDERING-693 134c704f-9b21-4f2e-91b3-4a467353bcc0 jira.xwiki.org Exploit, Patch, Vendor Advisory
jira.xwiki.org/browse/XRENDERING-793 134c704f-9b21-4f2e-91b3-4a467353bcc0 jira.xwiki.org Exploit, Patch, Vendor Advisory
github.com/xwiki/xwiki-rendering/security/advisories/GHSA-9xc6-c2rm-f27p [email protected] github.com Patch, Vendor Advisory
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