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CVE-2021-37633 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:7.4 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/discourse/discourse/commit/38199424bc840d2ef002cd1e9bffdbb99191eb47	CVE	PatchThird Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-v3v8-3m5w-pjp9	CVE	Third Party Advisory
https://github.com/discourse/discourse/commit/38199424bc840d2ef002cd1e9bffdbb99191eb47	[email protected]	PatchThird Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-v3v8-3m5w-pjp9	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
discourse discourse	< 2.7.8 2.8.0 beta2 2.8.0 beta3
CPE cpe:2.3:a:discourse:discourse:::::::: cpe:2.3:a:discourse:discourse:2.8.0:beta2:::::: cpe:2.3:a:discourse:discourse:2.8.0:beta3:::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 17, 2021	Initial Analysis	[email protected]