{"id":"CVE-2025-67723","summary":"Discourse vulnerable to stored Cross-site Scripting via Katex in discourse-math plugin","details":"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.","aliases":["BIT-discourse-2025-67723","GHSA-955h-m28g-5379"],"modified":"2026-09-29T11:45:48.237609310Z","published":"2026-01-28T18:21:35.379Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/67xxx/CVE-2025-67723.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"fixed":"3.5.4"}]}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/67xxx/CVE-2025-67723.json"},{"type":"ADVISORY","url":"https://github.com/discourse/discourse/security/advisories/GHSA-955h-m28g-5379"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-67723"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/discourse/discourse","events":[{"introduced":"75d61b40ee928a4620b16f5438ca886678fab00d"},{"fixed":"f31b18139a7aadbc4a5f7e8e565a6f4376010c3a"},{"introduced":"3e7317b3344cca6c6510a32cc4c5c0f540132ad9"},{"fixed":"a06dd5861f88643107c9c534a3e75ce4c5fe4bec"},{"introduced":"322d3c0ac6a8f133b3f82875e9dbbe310f638c1b"},{"fixed":"322d3c0ac6a8f133b3f82875e9dbbe310f638c1b"}],"database_specific":{"extracted_events":[{"introduced":"2025.11.0-latest"},{"fixed":"2025.11.2"},{"introduced":"2025.12.0-latest"},{"fixed":"2025.12.1"},{"introduced":"2026.1.0-latest"},{"fixed":"2026.1.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v2025.11.1","release","latest-release","beta","v2025.12.0","v2025.11.0","v2025.12.0-latest"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-67723.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L"}]}