XWiki Platform is a generic wiki platform. From 13.4-rc-1 until 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1, the Live Data edit REST API allows a user who can edit a page to change that page's rights without executing the normal document-saving authorization checks. The user can grant script right and then execute potentially dangerous Velocity scripts or send unfiltered HTML and JavaScript to clients. The same missing checks can circumvent extension security controls implemented as listeners for UserUpdatingDocumentEvent and related user document events. This issue is fixed in versions 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Xwiki
  • Xwiki-platform

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References
Link Providers
https://github.com/xwiki/xwiki-platform/commit/1ddb954767e50782be960b953b012c1242f6843b cve-icon cve-icon
https://github.com/xwiki/xwiki-platform/commit/448b0f074cc6711410eb2647c4740454c92d1626 cve-icon cve-icon
https://github.com/xwiki/xwiki-platform/commit/778b82b4806ce7ebddb775f953545ff73b841f8b cve-icon cve-icon
https://github.com/xwiki/xwiki-platform/commit/fbad7dac8f46c560577e41b9259cbbbbd343e6fc cve-icon cve-icon
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-16.10.17 cve-icon cve-icon
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-17.10.4 cve-icon cve-icon
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-17.4.10 cve-icon cve-icon
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-18.1.0-rc-1 cve-icon cve-icon
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-45ph-gxxr-gwgw cve-icon cve-icon
https://jira.xwiki.org/browse/XWIKI-23986 cve-icon cve-icon
History

Tue, 15 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 15 Sep 2026 18:15:00 +0000

Type Values Removed Values Added
First Time appeared Xwiki
Xwiki xwiki-platform
Vendors & Products Xwiki
Xwiki xwiki-platform

Tue, 15 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
Description XWiki Platform is a generic wiki platform. From 13.4-rc-1 until 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1, the Live Data edit REST API allows a user who can edit a page to change that page's rights without executing the normal document-saving authorization checks. The user can grant script right and then execute potentially dangerous Velocity scripts or send unfiltered HTML and JavaScript to clients. The same missing checks can circumvent extension security controls implemented as listeners for UserUpdatingDocumentEvent and related user document events. This issue is fixed in versions 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1.
Title XWiki Platform: Privilege escalation from edit to script right through Live Data editing
Weaknesses CWE-862
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-09-15T14:38:27.596Z

Updated: 2026-09-15T18:03:06.902Z

Reserved: 2026-06-11T15:50:01.283Z

Link: CVE-2026-53966

cve-icon Vulnrichment

Updated: 2026-09-15T17:38:27.783Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-15T15:17:17.533

Modified: 2026-09-30T17:43:24.057

Link: CVE-2026-53966

cve-icon Redhat

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