Improper Restriction of Rendered UI Layers or Frames in XWiki platform - CVE-2026-26000
Published: May 5, 2026
Vulnerability identifier: #VU129895
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-26000
CWE-ID: CWE-1021
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform click-jacking attacks.
The vulnerability exists due to improper restriction of rendered ui layers or frames in comments when rendering injected CSS. A remote attacker can inject CSS in comments to perform click-jacking attacks.
User interaction is required for a victim to click the crafted link area.
Affected software
XWiki platform
How to mitigate CVE-2026-26000
Install security update from vendor's website.
XWiki platform - addressed in versions 16.10.13, 17.4.6, 17.9.0