CVE-2023-25167: Discourse

Medium severity, CVSS 5.7. EPSS: 0.6% chance of exploitation in the next 30 days.

Discourse is an open source discussion platform. In affected versions a malicious user can cause a regular expression denial of service using a carefully crafted git URL. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. There are no known workarounds for this issue.

Affected products

• Discourse Discourse: before 3.0.1 (fixed in 3.0.1); version 3.1.0 only

Published 2023-02-08. Last modified 2026-06-17.