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CVE-2025-48954 Details

Description

Discourse is an open-source discussion platform. Versions prior to 3.5.0.beta6 are vulnerable to cross-site scripting when the content security policy isn't enabled when using social logins. Version 3.5.0.beta6 patches the issue. As a workaround, have the content security policy enabled.

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:8.1 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/discourse/discourse/security/advisories/GHSA-26p5-mjjh-wfcf	[email protected]	Vendor Advisory

Weakness Enumeration

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

Affected Products

Product	Versions
discourse discourse	< 3.5.0 3.5.0 beta1 3.5.0 beta2 3.5.0 beta3 3.5.0 beta4
CPE cpe:2.3:a:discourse:discourse:::::beta:::* cpe:2.3:a:discourse:discourse:3.5.0:beta1:::beta:::* cpe:2.3:a:discourse:discourse:3.5.0:beta2:::beta:::* cpe:2.3:a:discourse:discourse:3.5.0:beta3:::beta:::* cpe:2.3:a:discourse:discourse:3.5.0:beta4:::beta:::* cpe:2.3:a:discourse:discourse:3.5.0:beta5:::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
Sep 25, 2025	Reanalysis	[email protected]
Aug 25, 2025	Initial Analysis	[email protected]
Jun 25, 2025	New CVE Received	[email protected]