Discourse vulnerable to stored Cross-site Scripting via Katex in discourse-math plugin
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| discourse | discourse | affected |
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Configuration 1 [-]
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No data.
| Vendor | Product | Versions |
|---|---|---|
| Discourse | Discourse | — |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.217% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:* cpe:2.3:a:discourse:discourse:2025.12.0:*:*:*:stable:*:*:* |
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Discourse
Discourse discourse |
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| Vendors & Products |
Discourse
Discourse discourse |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Discourse vulnerable to stored Cross-site Scripting via Katex in discourse-math plugin | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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