VULNERABILITY INTELLIGENCE

CVE-2021-37633

CVSS score7.4 HIGH
EPSS probability0.76%
CISA KEVNot currently listed
Published2021-08-09
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Description

Discourse is an open source discussion platform. In versions prior to 2.7.8 rendering of d-popover tooltips can be susceptible to XSS attacks. This vulnerability only affects sites which have modified or disabled Discourse's default Content Security Policy. This issue is patched in the latest `stable` 2.7.8 version of Discourse. As a workaround users may ensure that the Content Security Policy is enabled, and has not been modified in a way which would make it more vulnerable to XSS attacks.

Weakness classification

  • security-advisories@github.com: CWE-79
  • nvd@nist.gov: CWE-79

Primary references