Unsafe Deserialization in Kanboard Project Management Software

CVE-2025-55010

What is CVE-2025-55010?

Kanboard, a project management software that employs the Kanban methodology, is susceptible to an unsafe deserialization flaw in the ProjectEventActvityFormatter component. This vulnerability allows admin users to manipulate the event['data'] field within the project_activities table, potentially enabling malicious actors to instantiate arbitrary PHP objects. By exploiting this vulnerability, a threat actor can inject a PHP gadget to place a malicious web shell in the /plugins directory, permitting remote code execution on the host system. The issue has been resolved in version 1.2.47.

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