CVE-2026-119049

high

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.

References

https://www.vulncheck.com/advisories/freemail-before-5.3.2-authorization-bypass-via-api-create-mailbox-claiming

https://github.com/idinging/freemail/releases/tag/v5.3.2

https://github.com/idinging/freemail/issues/73

https://github.com/idinging/freemail/commit/62ed3afdbb4de90a135c12de928e586caf01b5a1

https://github.com/idinging/freemail/blob/a95c1710e7eeb9f2c74a49ef962f4f43a36695b3/src/db/users.js#L137-L163

https://github.com/idinging/freemail

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-112815

Details

Source: Mitre, NVD

Published: 2026-10-29

Updated: 2026-10-29

Risk Information

CVSS v2

Base Score: 8

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:P/A:P

Severity: High

CVSS v3

Base Score: 7.6

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Severity: High

CVSS v4

Base Score: 7.2

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

Severity: High

EPSS

EPSS: 0.00386