SQL injection in Kanboard - CVE-2026-33058
Published: November 9, 2026
Vulnerability identifier: #VU162630
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-33058
CWE-ID: CWE-89
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an authenticated attacker with permission to add users to a project to extract the entire Kanboard database.
The vulnerability exists due to insufficient validation of the external_id_column POST parameter in the project permissions handler when used as an SQL column identifier. An authenticated attacker can submit a crafted parameter value to inject SQL and retrieve sensitive database contents, including administrator API keys.
Affected software
Kanboard
How to mitigate CVE-2026-33058
Install security update from vendor's website.
Kanboard - update to 1.2.51