Path traversal in Wekan - #VU150007
Published: September 15, 2026
Vulnerability identifier: #VU150007
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to write arbitrary files outside the attachment storage root.
The vulnerability exists due to path traversal in the Attachments collection namingFunction when processing attachment upload requests. A remote attacker can send a specially crafted upload request containing a traversal file identifier to write arbitrary content to an attacker-controlled path.
Affected software
Wekan
Remediation
Install security update from vendor's website.
Wekan - update to 11.65