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CVE-2024-39320 Details

Description

Discourse is an open source discussion platform. Prior to 3.2.5 and 3.3.0.beta5, the vulnerability allows an attacker to inject iframes from any domain, bypassing the intended restrictions enforced by the allowed_iframes setting. This vulnerability is fixed in 3.2.5 and 3.3.0.beta5.

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:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/discourse/discourse/commit/188cb58daa833839c54c266ce22db150a3f3a210	CVE	Patch
https://github.com/discourse/discourse/commit/76f06f6b1491db6bd09a4017d2c5591431b3b16e	CVE	Patch
https://github.com/discourse/discourse/security/advisories/GHSA-4p82-xh38-gq4p	CVE	Vendor Advisory
https://github.com/discourse/discourse/commit/188cb58daa833839c54c266ce22db150a3f3a210	[email protected]	Patch
https://github.com/discourse/discourse/commit/76f06f6b1491db6bd09a4017d2c5591431b3b16e	[email protected]	Patch
https://github.com/discourse/discourse/security/advisories/GHSA-4p82-xh38-gq4p	[email protected]	Vendor Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1021	Improper Restriction of Rendered UI Layers or Frames	[email protected]
CWE-1021	Improper Restriction of Rendered UI Layers or Frames	[email protected]
CWE-74	Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')	[email protected]

Affected Products

Product	Versions
discourse discourse	< 3.2.5 3.3.0 beta1 3.3.0 beta2 3.3.0 beta3 3.3.0 beta4
CPE cpe:2.3:a:discourse:discourse:::::stable:::* cpe:2.3:a:discourse:discourse:3.3.0:beta1:::beta:::* cpe:2.3:a:discourse:discourse:3.3.0:beta2:::beta:::* cpe:2.3:a:discourse:discourse:3.3.0:beta3:::beta:::* cpe:2.3:a:discourse:discourse:3.3.0:beta4:::beta:::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
Sep 11, 2024	Initial Analysis	[email protected]
Jul 30, 2024	New CVE Received	[email protected]