CVE-2026-21879

4.7 MEDIUM
Published: January 08, 2026 Modified: January 20, 2026
View on NVD

Description

Kanboard is project management software focused on Kanban methodology. Versions 1.2.48 and below are vulnerable to an Open Redirect attack that allows malicious actors to redirect authenticated users to attacker-controlled websites. By crafting URLs such as //evil.com, attackers can bypass the filter_var($url, FILTER_VALIDATE_URL) validation check. This vulnerability could be exploited to conduct phishing attacks, steal user credentials, or distribute malware. The issue is fixed in version 1.2.49.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/kanboard/kanboard/releases/tag/v1.2.49
Source: security-advisories@github.com
Release Notes
https://github.com/kanboard/kanboard/security/advisories/GHSA-mhv9-7m9w-7hcq
Source: security-advisories@github.com
Exploit Third Party Advisory
https://github.com/kanboard/kanboard/security/advisories/GHSA-mhv9-7m9w-7hcq
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Third Party Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
4.7 / 10.0
EPSS (Exploit Probability)
0.0%
15th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

kanboard