Cross-site scripting in Wekan - #VU147310
Published: September 7, 2026 / Updated: September 15, 2026
Vulnerability identifier: #VU147310
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.
The vulnerability exists due to improper validation of active HTML attachments in Wekan attachment upload and download handling when an authenticated user uploads a crafted HTML attachment and a victim opens its full Meteor-Files URL. A remote user can upload an HTML attachment containing a crafted event handler to execute arbitrary JavaScript in a victim\'s browser.
Affected software
Wekan
Remediation
Install security update from vendor's website.
Wekan - update to 11.41