Vulnerability · Published Sep 15, 2026 · Assigned by GitHub_M
CVE-2026-53966XWiki Platform: Privilege escalation from edit to script right through Live Data editing
High 7.1
In plain English
A high-severity missing authorization in xwiki-platform from xwiki. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.xwiki.platform:xwiki-platform-livedata-livetable | 16.10.17 | GHSA-45ph-gxxr-gwgw |
| Maven | org.xwiki.platform:xwiki-platform-livedata-livetable | 17.4.10 | GHSA-45ph-gxxr-gwgw |
| Maven | org.xwiki.platform:xwiki-platform-livedata-livetable | 17.10.4 | GHSA-45ph-gxxr-gwgw |
| Maven | org.xwiki.platform:xwiki-platform-livedata-livetable | 18.1.0-rc-1 | GHSA-45ph-gxxr-gwgw |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| xwiki | xwiki-platform | >= 13.4-rc-1, < 16.10.17>= 17.0.0-rc-1, < 17.4.10>= 17.5.0-rc-1, < 17.10.4>= 18.0.0-rc-1, < 18.1.0-rc-1 |
Weakness: CWE-862 · 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
References
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-45ph-gxxr-gwgw x_refsource_CONFIRM
- https://github.com/xwiki/xwiki-platform/commit/1ddb954767e50782be960b953b012c1242f6843b x_refsource_MISC
- https://github.com/xwiki/xwiki-platform/commit/448b0f074cc6711410eb2647c4740454c92d1626 x_refsource_MISC
- https://github.com/xwiki/xwiki-platform/commit/778b82b4806ce7ebddb775f953545ff73b841f8b x_refsource_MISC
- https://github.com/xwiki/xwiki-platform/commit/fbad7dac8f46c560577e41b9259cbbbbd343e6fc x_refsource_MISC
- https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-16.10.17 x_refsource_MISC
- https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-17.10.4 x_refsource_MISC
- https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-17.4.10 x_refsource_MISC
- https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-18.1.0-rc-1 x_refsource_MISC
- https://jira.xwiki.org/browse/XWIKI-23986 x_refsource_MISC