CVE-2023-28107 MEDIUM

CVE-2023-28107: Discourse vulnerable to multisite DoS by spamming backups

Vendor Discourse
Product discourse
Weakness CWE-770 · Uncontrolled resource consumption
Published March 17, 2023
Last update February 25, 2025

CVSS base score

4.5/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction Required
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Discourse is an open-source discussion platform. Prior to version 3.0.2 of the `stable` branch and version 3.1.0.beta3 of the `beta` and `tests-passed` branches, a user logged as an administrator can request backups multiple times, which will eat up all the connections to the DB. If this is done on a site using multisite, then it can affect the whole cluster. The vulnerability is patched in version 3.0.2 of the `stable` branch and version 3.1.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.

Key dates

02Disclosure timeline

March 17, 2023 CVE published
February 25, 2025 Record updated