Vulnerability in idinging FreeMail

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/idinging/freemail
• github.com/idinging/freemail/blob/a95c1710e7eeb9f2c74a49ef962f4f43a36695b3/src/db/users.js
• github.com/idinging/freemail/commit/62ed3afdbb4de90a135c12de928e586caf01b5a1
• github.com/idinging/freemail/issues/73
• github.com/idinging/freemail/releases/tag/v5.3.2
• www.vulncheck.com/advisories/freemail-before-5.3.2-authorization-bypass-via-api-create-…