VULNERABILITY INTELLIGENCE

CVE-2023-43659

CVSS score8 HIGH
EPSS probability0.48%
CISA KEVNot currently listed
Published2023-10-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Description

Discourse is an open source platform for community discussion. Improper escaping of user input allowed for Cross-site Scripting attacks via the digest email preview UI. This issue only affects sites with CSP disabled. This issue has been patched in the 3.1.1 stable release as well as the 3.2.0.beta1 release. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum.

Weakness classification

  • security-advisories@github.com: CWE-79

Primary references