Vulnerability Description
Lean 4 VS Code Extension is a Visual Studio Code extension for the Lean 4 proof assistant. Projects that use @leanprover/unicode-input-component are vulnerable to an XSS exploit in 0.1.9 of the package and lower. The component re-inserted text in the input element back into the input element as unescaped HTML. The issue has been resolved in 0.2.0.
Related Weaknesses (CWE)
References
- https://github.com/leanprover/vscode-lean4/pull/735
- https://github.com/leanprover/vscode-lean4/security/advisories/GHSA-6ggm-pwr9-r5
- https://leanprover.zulipchat.com/#narrow/channel/113488-general/topic/weird.20be
FAQ
What is CVE-2026-32732?
CVE-2026-32732 is a documented vulnerability. Lean 4 VS Code Extension is a Visual Studio Code extension for the Lean 4 proof assistant. Projects that use @leanprover/unicode-input-component are vulnerable to an XSS exploit in 0.1.9 of the packag...
How severe is CVE-2026-32732?
CVSS scoring is not yet available for CVE-2026-32732. Check NVD for updates.
Is there a patch for CVE-2026-32732?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.