What is the CVSS score of CVE-2026-25531?

CVE-2026-25531 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Kanboard are affected by CVE-2026-25531?

Organizations using Kanboard should be aware of moderate risk from CVE-2026-25531, a missing authorization vulnerability rated CVSS 4.3. Attackers could gain access beyond their authorized level.. A patch is available.

Is there a public PoC exploit available for CVE-2026-25531?

Yes, a public proof-of-concept exploit is available for CVE-2026-25531. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-25531?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Kanboard CVE-2026-25531

MEDIUM

Missing Authorization (CWE-862)

2026-02-13 security-advisories@github.com

Authentication Bypass Kanboard

4.3

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

PoC Detected

Feb 13, 2026 - 20:43 vuln.today

Public exploit code

Patch released

Feb 13, 2026 - 20:43 nvd

Patch available

CVE Published

Feb 13, 2026 - 15:15 nvd

MEDIUM 4.3

DescriptionGitHub Advisory

Kanboard is project management software focused on Kanban methodology. Prior to 1.2.50, The fix for CVE-2023-33968 is incomplete. The TaskCreationController::duplicateProjects() endpoint does not validate user permissions for target projects, allowing authenticated users to duplicate tasks into projects they cannot access. This vulnerability is fixed in 1.2.50.

AnalysisAI

Kanboard versions prior to 1.2.50 allow authenticated users to duplicate tasks into projects they lack access permissions for due to insufficient validation in the TaskCreationController endpoint. This privilege escalation vulnerability enables users to move sensitive tasks across project boundaries they should not be able to access. Public exploit code exists for this incomplete fix of a prior authorization bypass vulnerability.

Technical ContextAI

Classified as CWE-862 (Missing Authorization). Affects Kanboard. Kanboard is project management software focused on Kanban methodology. Prior to 1.2.50, The fix for CVE-2023-33968 is incomplete. The TaskCreationController::duplicateProjects() endpoint does not validate user permissions for target projects, allowing authenticated users to duplicate tasks into projects they cannot access. This vulnerability is fixed in 1.2.50.