Path traversal in Wekan - CVE-2026-52890
Published: July 28, 2026
Vulnerability identifier: #VU139856
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-52890
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: wekan.github.io
Affected software:
Wekan
Wekan
Detailed vulnerability description
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to path traversal in attachment file handling when processing attachment download requests using attacker-controlled versions.original.path and versions.original.storage metadata. A remote user can insert a specially crafted attachment record to disclose sensitive information.
The issue is reachable by a logged-in board member with write access and does not require user interaction.
How to mitigate CVE-2026-52890
Install security update from vendor's website.