CVE-2026-32732

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.

PUBLISHED Reserved 2026-03-13 | Published 2026-03-13 | Updated 2026-03-13 | Assigner GitHub_M

Problem types

CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Product status

References

github.com/...-lean4/security/advisories/GHSA-6ggm-pwr9-r5h2

github.com/leanprover/vscode-lean4/pull/735

leanprover.zulipchat.com/

cve.org (CVE-2026-32732)

nvd.nist.gov (CVE-2026-32732)

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