Medium 6.5Published Apr 14, 2026

CVE-2026-40105XWiki has Reflected Cross-Site Scripting (XSS) in its page history compare functionality

Updated under an hour ago (Oct 27, 2026, 12:10 AM ET)

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It affects xwiki-platform and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for xwiki-platform

Exploited in the last 30 days

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Versions 10.4-rc-1, through 16.10.15, 17.0.0-rc-1, through 17.4.7 and 17.5.0-rc-1 through 17.10.0 contain a reflected cross-site scripting vulnerability (XSS) in the comparison view between revisions of a page allows executing JavaScript code in the user's browser. If the current user is an admin, this can not only affect the current user but also the confidentiality, integrity and availability of the whole XWiki instance. If developers are unable to update immediately, they can apply the patch manually to templates/changesdoc.vm in the deployed WAR.

CVSS: 6.5 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
Weakness (CWE): CWE-80
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

xwiki xwiki-platform xwiki:platform (from the name)	from 10.4-rc-1, < 16.10.16; from 17.0.0-rc-1, < 17.4.8; from 17.5.0-rc-1, < 17.10.1	CNA record
xwiki xwiki xwiki:xwiki	from 10.4 before 16.10.16; from 17.0.0 before 17.4.8; from 17.5.0 before 17.10.1	NVD

References

References

https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-w4fj-87j5-f25c	x-refsource-confirm, vendor-advisory
https://github.com/xwiki/xwiki-platform/commit/3c8a2ec985641367015c2db937574fcd360c788c	x-refsource-misc, patch
https://jira.xwiki.org/browse/XWIKI-23472	x-refsource-misc, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.