VULNERABILITY INTELLIGENCE

CVE-2023-23621

CVSS score8.6 HIGH
EPSS probability0.87%
CISA KEVNot currently listed
Published2023-01-28
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Description

Discourse is an open-source discussion platform. Prior to version 3.0.1 on the `stable` branch and version 3.1.0.beta2 on the `beta` and `tests-passed` branches, a malicious user can cause a regular expression denial of service using a carefully crafted user agent. This issue is patched in version 3.0.1 on the `stable` branch and version 3.1.0.beta2 on the `beta` and `tests-passed` branches. There are no known workarounds.

Weakness classification

  • security-advisories@github.com: CWE-1333
  • nvd@nist.gov: CWE-1333

Primary references