CVE-2026-119049
FreeMail before 5.3.2 Authorization Bypass via /api/create Mailbox Claiming
CVSS Score
7.6
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | idinging |
| Product | freemail |
| Published | Oct 29, 2026 |
| Last Updated | Oct 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
Low
Affected Versions
idinging / FreeMail
0 < 5.3.2
References
github.com: https://github.com/idinging/freemail/issues/73 github.com: https://github.com/idinging/freemail github.com: https://github.com/idinging/freemail/commit/62ed3afdbb4de90a135c12de928e586caf01b5a1 github.com: https://github.com/idinging/freemail/releases/tag/v5.3.2 github.com: https://github.com/idinging/freemail/blob/a95c1710e7eeb9f2c74a49ef962f4f43a36695b3/src/db/users.js#L137-L163 vulncheck.com: https://www.vulncheck.com/advisories/freemail-before-5.3.2-authorization-bypass-via-api-create-mailbox-claiming
Credits
hieuPenguinnn iding2959