Advisory Details

January 9th, 2026

(0Day) github-kanban-mcp-server execAsync Command Injection Remote Code Execution Vulnerability

ZDI-26-022
ZDI-CAN-27784

CVE ID CVE-2026-0756
CVSS SCORE 9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS github-kanban-mcp-server
AFFECTED PRODUCTS github-kanban-mcp-server
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of github-kanban-mcp-server. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of the create_issue parameter. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the service account.

ADDITIONAL DETAILS

08/14/25 – ZDI submitted the reports to the vendor
09/24/25 – ZDI asked for updates
12/14/25 – ZDI notified the vendor of the intention to publish the case as a 0-day advisory

-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the product


DISCLOSURE TIMELINE
  • 2025-08-14 - Vulnerability reported to vendor
  • 2026-01-09 - Coordinated public release of advisory
  • 2026-01-09 - Advisory Updated
CREDIT Brandon Niemczyk & Peter Girnus (@gothburz) of Trend Zero Day Initiative
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