CyberRota Analysis
AI-GeneratedThe vulnerability allows an unauthenticated attacker to exploit the signup flow of the Plane project management tool, enabling them to register an account using a target's email address without verifying ownership. This leads to the potential enumeration of pending workspace invitations and unauthorized access to workspaces as the invited role. Organizations using versions prior to 1.4.0 should prioritize patching this critical issue to prevent unauthorized access and data exposure.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Plane is an open-source project management tool. Prior to 1.4.0, Plane's signup flow creates a logged-in User row for any submitted email without an out-of-band ownership check, while User.email is unique=True. The authenticated user can call GET /api/users/me/workspaces/invitations/, which returns each WorkspaceMemberInvite whose email matches request.user.email. WorkSpaceMemberInviteSerializer uses fields = "all", exposing the token that protects the invitation join endpoint. An unauthenticated attacker who knows a target's email can register an account using that address, enumerate pending invitations, and accept an invitation as the target, joining a workspace at the invited role. The term pre-auth describes the attacker's initial state: the attacker has no credential before signup, while the enumeration and join requests use the session created by that signup. This issue is fixed in 1.4.0.