CVE-2026-40105: 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.

Quick answers

Is CVE-2026-40105 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-40105 being exploited in the wild.

How severe is CVE-2026-40105?

Medium severity, with a CVSS score of 6.1, published 15 April 2026.

Which products and versions are affected?

org.xwiki.platform:xwiki-platform-web-templates (Maven) ECOSYSTEM:introduced=10.4-rc-1,fixed=16.10.16.

Is there a fix for CVE-2026-40105?

Yes. org.xwiki.platform:xwiki-platform-web-templates (Maven): upgrade to 16.10.16 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Am I affected by CVE-2026-40105?

Check whether you run org.xwiki.platform:xwiki-platform-web-templates (Maven) or Xwiki at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

• org.xwiki.platform:xwiki-platform-web-templates (Maven): upgrade to 16.10.16 or later

  # set org.xwiki.platform:xwiki-platform-web-templates to 16.10.16 in your pom.xml or build.gradle

Affected products

• org.xwiki.platform:xwiki-platform-web-templates (Maven) ECOSYSTEM:introduced=10.4-rc-1,fixed=16.10.16
• Xwiki

Identifiers

• CVE-2026-40105
• GHSA-w4fj-87j5-f25c

References

• https://api.github.com/users/mikecole-mg
• https://github.com/mikecole-mg
• https://api.github.com/users/mikecole-mg/gists%7B/gist_id%7D
• https://api.github.com/users/mikecole-mg/repos
• https://avatars.githubusercontent.com/u/171299069?v=4
• https://api.github.com/users/mikecole-mg/events%7B/privacy%7D