Medium severity · published Apr 15, 2026
CVE-2026-40105
XWiki has Reflected Cross-Site Scripting (XSS) in its page history compare functionality
6.1
CVSS
0.5%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XW
xwiki-platform · xwiki
>= 10.4-rc-1, < 16.10.16; >= 17.0.0-rc-1, < 17.4.8; >= 17.5.0-rc-1, < 17.10.1 · source: vendor
XW
Xwiki · Xwiki
10.4 before 16.10.16; 17.0.0 before 17.4.8; 17.5.0 before 17.10.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-40105
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-40105
Patch
https://github.com/xwiki/xwiki-platform/commit/3c8a2ec985641367015c2db937574fcd360c788c
Vendor Advisory
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-w4fj-87j5-f25c
Vendor Advisory
https://jira.xwiki.org/browse/XWIKI-23472
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