CVE-2025-48954

Name: CVE-2025-48954
Creator: NVD / NIST
Published: 2025-06-25T14:15:24.777+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.63%

Last modified Jun 17, 2026

CVE-2025-48954 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.63% chance of exploitation in the next 30 days.

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 3.1

6.1/10

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

EPSS Probability

0.63%

45.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions	Update
Discourse	Discourse	< 3.5.0	—
Discourse	Discourse	3.5.0	Beta1

References

https://github.com/discourse/discourse/security/advisories/GHSA-26p5-mjjh-wfcfVendor Advisory

Timeline

Published: Jun 25, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-48954?

How severe is CVE-2025-48954?

CVE-2025-48954 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.63% probability of exploitation in the next 30 days.

How do I fix CVE-2025-48954?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-48954?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST