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.

SeverityHigh

CVSS7.6

Exploit probability—

ProductFreeMail

PublishedOct 29, 2026

First seenNov 4, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

idinging FreeMail5.3.2 or later

Patches

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

Vendor advisories

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

Affected products

Product	Affected versions	Fixed in
idinging FreeMail	v < 5.3.2	5.3.2

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