medium4.6
CVE-2025-67723
Discourse is an open source discussion platform.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Discourse | Discourse | before 3.5.4 from 2025.11.0 before 2025.11.2 Version 2025.12.0 |