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updated 3 days, 1 hour ago by @jopejoe1 Activity log
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  • @jopejoe1 removed
    4 packages
    • discourse-mail-receiver
    • python312Packages.pydiscourse
    • python313Packages.pydiscourse
    • grafanaPlugins.grafana-discourse-datasource
Discourse vulnerable to stored Cross-site Scripting via Katex in discourse-math plugin

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

discourse
  • ==< 3.5.4
  • ==>= 2026.1.0-latest, < 2026.1.0
  • ==>= 2025.12.0-latest, < 2025.12.1
  • ==>= 2025.11.0-latest, < 2025.11.2

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