CVE-2026-30244 in plane
Summary
by MITRE • 03/07/2026
Plane is an an open-source project management tool. Prior to version 1.2.2, unauthenticated attackers can enumerate workspace members and extract sensitive information including email addresses, user roles, and internal identifiers. The vulnerability stems from Django REST Framework permission classes being incorrectly configured to allow anonymous access to protected endpoints. This issue has been patched in version 1.2.2.
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Analysis
by VulDB Data Team • 03/12/2026
The vulnerability identified as CVE-2026-30244 affects Plane, an open-source project management tool that has been widely adopted for collaborative work environment management. This security flaw represents a critical misconfiguration in the application's access control mechanisms that fundamentally undermines the confidentiality and integrity of user data within workspace environments. The vulnerability exists in versions prior to 1.2.2, indicating that the developers were aware of the issue but failed to implement proper access controls until the patch release. The affected system utilizes Django REST Framework as its backend API framework, which provides a robust foundation for building web APIs but requires explicit configuration of permission controls to function securely. The misconfiguration in question involves the improper setup of permission classes that should have enforced authentication requirements for accessing sensitive workspace information.
The technical flaw manifests through the incorrect implementation of Django REST Framework permission classes that permit anonymous access to protected endpoints designed to contain sensitive user information. This misconfiguration allows unauthenticated attackers to perform user enumeration attacks against workspace member lists, extracting valuable intelligence including email addresses, user roles, and internal identifiers that would normally be restricted to authorized personnel only. The vulnerability is classified as a permission escalation issue that violates fundamental security principles of least privilege and access control. According to CWE guidelines, this represents a specific instance of CWE-284: Improper Access Control, where the system fails to properly enforce access restrictions for protected resources. The flaw enables attackers to gather reconnaissance data that could facilitate more sophisticated attacks such as targeted social engineering campaigns, privilege escalation attempts, or further exploitation of the system through the acquired user information.
The operational impact of this vulnerability extends beyond simple information disclosure, as the extracted data provides attackers with comprehensive insights into the organization's user base and internal structure. Email addresses obtained through this enumeration can be used for phishing attacks, while user roles and internal identifiers enable attackers to understand the hierarchy and permissions structure within the workspace. This information can be particularly valuable for attackers seeking to escalate privileges or target specific individuals for more advanced exploitation techniques. The vulnerability creates a significant risk for organizations using Plane, as it allows unauthorized parties to gain intelligence that could be used for various malicious activities including account takeover attempts, insider threat exploitation, or coordinated attacks against specific users. The exposure of internal identifiers particularly raises concerns about potential cascading effects on other systems or applications that might share similar user identification schemes.
Mitigation strategies for this vulnerability should focus on implementing proper authentication and authorization controls within the Django REST Framework configuration. Organizations should immediately upgrade to version 1.2.2 or later, which contains the necessary patch to correct the permission class configuration. Additionally, security teams should conduct comprehensive reviews of all API endpoints to ensure that appropriate permission classes are properly configured and that anonymous access is restricted to only publicly accessible resources. The implementation of rate limiting and monitoring for API access patterns can help detect and prevent automated enumeration attempts. From an ATT&CK framework perspective, this vulnerability aligns with techniques such as T1087.001: Account Discovery and T1590: Gather Victim Identity Information, where adversaries attempt to discover user accounts and organizational structure information. Regular security assessments and penetration testing should be conducted to identify similar misconfigurations in other components of the application stack, ensuring that the entire system maintains proper access controls and follows security best practices established by frameworks such as the OWASP Top Ten and NIST Cybersecurity Framework.