Improper Authorization in Discourse - CVE-2022-39356
Published: November 1, 2022 / Updated: July 1, 2026
Vulnerability identifier: #VU136068
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-39356
CWE-ID: CWE-285
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to gain improper access to existing accounts.
The vulnerability exists due to improper authorization in invite link handling when processing invitation-based account access. A remote user can use an invitation link that is not restricted to a single invitee email address to gain improper access to existing accounts.
This issue does not allow access to administrator accounts.
Affected software
Discourse
How to mitigate CVE-2022-39356
Install security update from vendor's website.
Discourse - addressed in versions 2.8.10, 2.9.0 beta10