GHSA-5ff8-jcf9-fw62
Cross-Site Scripting in markdown-it-katex
All versions of markdown-it-katex are vulnerable to Cross-Site Scripting (XSS). The package fails to properly escape error messages, which may allow attackers to execute arbitrary JavaScript in a victim's browser by triggering an error.
Recommendation
No fix is currently available. Consider using an alternative package until a fix is made available.
What each source reports
GitHub AdvisoriesNo score
Cross-Site Scripting in markdown-it-katex
All versions of markdown-it-katex are vulnerable to Cross-Site Scripting (XSS). The package fails to properly escape error messages, which may allow attackers to execute arbitrary JavaScript in a victim's browser by triggering an error.
Recommendation
No fix is currently available. Consider using an alternative package until a fix is made available.
- Record
GHSA-5ff8-jcf9-fw62- Weakness
- CWE-79
- Updated
- 2026-11-02
OSVNo score
Cross-Site Scripting in markdown-it-katex
All versions of markdown-it-katex are vulnerable to Cross-Site Scripting (XSS). The package fails to properly escape error messages, which may allow attackers to execute arbitrary JavaScript in a victim's browser by triggering an error.
Recommendation
No fix is currently available. Consider using an alternative package until a fix is made available.
- Record
GHSA-5ff8-jcf9-fw62- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
markdown-it-katexnpm | 0.0.0 and later | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-5ff8-jcf9-fw62 is a vulnerability with no CVSS score yet in markdown-it-katex, published September 4, 2020. No source lists public exploit code. No source names a fixed version.