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TI-2026-20640 Aliases CVE-2026-25531

Kanboard TaskCreationController::duplicateProjects() endpoint does not validate user permissions for target projects

Priority MEDIUM 53CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00259 17th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed kanboard (kanboard): 1.2.50

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
kanboardkanboardbefore 1.2.501.2.50Patch availableCNA
  • kanboard Vendorkanboard Affected before 1.2.50 Fixed in 1.2.50 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:kanboard:kanboard:*:*:*:*:*:*:*:*before 1.2.50Vulnerablekanboard
  • cpe:2.3:a:kanboard:kanboard:*:*:*:*:*:*:*:* Versions before 1.2.50 Vulnerable ·kanboard

Remediation

  • Fix · CNA kanboard (kanboard) Fixed in 1.2.50

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25531

References

Exploit 1

Patch 1

Other 1

  • TI-2026-17582 Kanboard is Vulnerable to Reverse Proxy Authentication Bypass CVSS 3.1CRITICAL 9.1
  • TI-2025-34713 Kanboard Authenticated Admin Remote Code Execution via Unsafe Deserialization of Events CVSS 3.1CRITICAL 9.1
  • TI-2024-34653 Remote code execution through language setting in kanboard CVSS 3.1CRITICAL 9.1
  • TI-2024-34652 Arbitrary File Read and Delete in kanboard CVSS 3.1CRITICAL 9.1
  • TI-2025-32655 Kanboard Password Reset Poisoning via Host Header Injection CVSS 3.1HIGH 8.8
  • TI-2026-20954 Kanboard is Missing Access Control on Plugin Installation leading to Administrative RCE CVSS 3.1HIGH 8.5
See all 47 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences