Cross-site scripting in Wiki.js - #VU151563
Published: September 22, 2026
Vulnerability identifier: #VU151563
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary JavaScript in a victim's browser session.
The vulnerability exists due to improper neutralization of input during web page generation in the HTML Security renderer when processing page content containing Vue slot directives. A remote user can create a page with a crafted Vue slot directive to execute arbitrary JavaScript in a victim's browser session.
User interaction is required for a victim to view the stored page.
Affected software
Wiki.js
Remediation
Install security update from vendor's website.
Wiki.js - update to 2.5.315