CVE-2025-67723

Name: CVE-2025-67723
Creator: NVD / NIST
Published: 2026-01-28T19:16:22.64+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2025-67723 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Discourse is an open source discussion platform. Versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 have a content-security-policy-mitigated cross-site scriptinv vulnerability on the Discourse Math plugin when using its KaTeX variant. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

Discourse is an open source discussion platform. Versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 have a content-security-policy-mitigated cross-site scriptinv vulnerability on the Discourse Math plugin when using its KaTeX variant. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. As a workaround, the Discourse Math plugin can be disabled, or the Mathjax provider can be used instead of KaTeX.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.19%

9.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Discourse	Discourse	< 3.5.4
Discourse	Discourse	>= 2025.11.0, < 2025.11.2
Discourse	Discourse	2025.12.0

References

https://github.com/discourse/discourse/security/advisories/GHSA-955h-m28g-5379Vendor Advisory

Timeline

Published: Jan 28, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-67723?

How severe is CVE-2025-67723?

CVE-2025-67723 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2025-67723?

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-2025-67723?

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

Scan your code now

Source: NVD / NIST