---
id: CVE-2026-119049
title: FreeMail before 5.3.2 Authorization Bypass via /api/create Mailbox Claiming
summary: >-
  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 t…
severity: high
cvss: 7.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-639
vendor: idinging
product: FreeMail
affected:
  - FreeMail < 5.3.2
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-29T14:02:16.305255Z'
published: '2026-10-29'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T14:02:26.966Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-119049'
references:
  - url: 'https://github.com/idinging/freemail/issues/73'
    label: 'GitHub Issue #73'
  - url: 'https://github.com/idinging/freemail'
  - url: >-
      https://github.com/idinging/freemail/commit/62ed3afdbb4de90a135c12de928e586caf01b5a1
  - url: 'https://github.com/idinging/freemail/releases/tag/v5.3.2'
    label: FreeMail v5.3.2 Release Notes
  - url: >-
      https://github.com/idinging/freemail/blob/a95c1710e7eeb9f2c74a49ef962f4f43a36695b3/src/db/users.js#L137-L163
  - url: >-
      https://www.vulncheck.com/advisories/freemail-before-5.3.2-authorization-bypass-via-api-create-mailbox-claiming
    label: >-
      VulnCheck Advisory: FreeMail before 5.3.2 Authorization Bypass via
      /api/create Mailbox Claiming
tags:
  - cve.org
epss: 0.00386
epssPercentile: 0.32796
ingestedAt: '2026-11-01T20:00:16.930Z'
---

## Overview

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.

## Affected

- `FreeMail < 5.3.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.