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  5. CVE-2026-26000

CVE-2026-26000: XWiki vulnerable to click-jacking through CSS injection in comments

February 12, 2026

It’s possible using comments to inject CSS that would transform the full wiki in a link area leading to a malicious page. All versions of XWiki are impacted by this kind of attack.

References

  • github.com/advisories/GHSA-74rh-c5rh-88vg
  • github.com/xwiki/xwiki-platform
  • github.com/xwiki/xwiki-platform/commit/29cb81f3a5387cf822d7e7534bdd63903275f86b
  • github.com/xwiki/xwiki-platform/commit/7b5a4f8c34d9b1da3d966e17f7dbccabac448e75
  • github.com/xwiki/xwiki-platform/pull/4645
  • github.com/xwiki/xwiki-platform/security/advisories/GHSA-74rh-c5rh-88vg
  • jira.xwiki.org/browse/XWIKI-23433
  • nvd.nist.gov/vuln/detail/CVE-2026-26000
  • www.xwiki.org/xwiki/bin/view/ReleaseNotes/Data/XWiki/17.9.0RC1/Entry006

Code Behaviors & Features

Detect and mitigate CVE-2026-26000 with GitLab Dependency Scanning

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Affected versions

All versions before 16.10.13, all versions starting from 17.0.0-rc-1 before 17.4.6, all versions starting from 17.5.0 before 17.9.0

Fixed versions

  • 17.9.0
  • 17.4.6
  • 16.10.13

Solution

Upgrade to versions 16.10.13, 17.4.6, 17.9.0 or above.

Impact 6.3 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Learn more about CVSS

Weakness

  • CWE-1021: Improper Restriction of Rendered UI Layers or Frames

Source file

maven/org.xwiki.platform/xwiki-platform-web/CVE-2026-26000.yml

Spotted a mistake? Edit the file on GitLab.

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