CVE-2026-40105 Details.
XWiki - Cross-Site Scripting
Atlas does not check this one. Works by exploiting the flaw.
The only reliable test for this one is to try the weakness itself, which can disturb the site. Atlas does not do that, so it does not run this check.
About CVE-2026-40105. What It Means.
XWiki is vulnerable to reflected Cross-Site Scripting (XSS) via the `viewer=changes` endpoint. The `rev2` parameter is not properly sanitised before being rendered in the response, allowing an attacker to inject arbitrary JavaScript. Affects XWiki versions prior to the patched release.
Affected Product. What Is Hit.
- Vendor
- xwiki
- Product
- XWiki Platform
More CVEs In XWiki Platform.
FAQ
Common Questions.
XWiki - Cross-Site Scripting. XWiki is vulnerable to reflected Cross-Site Scripting (XSS) via the `viewer=changes` endpoint. The `rev2` parameter is not properly sanitised before being rendered in the response, allowing an attacker to inject arbitrary JavaScript. Affects XWiki versions prior to the patched release.
No. The only reliable test for this one is to try the weakness itself, which can disturb the site. Atlas does not do that, so it does not run this check. The facts about CVE-2026-40105 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-40105 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update XWiki Platform to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-40105. Atlas does not run a check for it, so nothing here says whether a particular site is affected.