Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2025-48954

Severity CVSS v4.0:
Pending analysis
Type:
CWE-79 Cross-Site Scripting (XSS)
Publication date:
25/06/2025
Last modified:
25/08/2025

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 8.10 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x
8.10
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:* 3.5.0 (excluding)
cpe:2.3:a:discourse:discourse:3.5.0:-:*:*: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:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools