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Advisories

FreeMail before 5.3.2 Authorization Bypass via /api/create Mailbox Claiming

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Severity
high
Date
Affecting

  • FreeMail >= 0, < 5.3.2

CWE
  • CWE-639 Authorization Bypass Through User-Controlled Key
CVSS
7.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
Credit
hieuPenguinnn, iding2959
Description
FreeMail before 5.3.2 contains an authorization bypass vulnerability that allows authenticated users to claim another user's existing mailbox via the POST /api/create endpoint. Attackers who know a victim's address can become co-owners through assignMailboxToUser to read messages and verification codes, set forwarding, and delete mail.

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