CVE-2022-39356 HIGH

CVE-2022-39356: Discourse user account takeover via email and invite link

Vendor Discourse
Product discourse
Weakness CWE-285
Published November 2, 2022
Last update April 23, 2025

CVSS base score

8.9/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Discourse is a platform for community discussion. Users who receive an invitation link that is not scoped to a single email address can enter any non-admin user's email and gain access to their account when accepting the invitation. All users should upgrade to the latest version. A workaround is temporarily disabling invitations with `SiteSetting.max_invites_per_day = 0` or scope them to individual email addresses.

Key dates

02Disclosure timeline

November 2, 2022 CVE published
April 23, 2025 Record updated

Related vulnerabilities

04Related CVE