None severityNVD Advisory· Published Mar 16, 2026· Updated Apr 16, 2026

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
@leanprover/unicode-input-componentnpm	< 0.2.0	0.2.0

Affected products

Leanprover/Vscode Lean4references
ghsa-coords
pkg:npm/%40leanprover/unicode-input-component
Range: < 0.2.0

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-6ggm-pwr9-r5h2ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-32732ghsaADVISORY
github.com/leanprover/vscode-lean4/pull/735nvdWEB
github.com/leanprover/vscode-lean4/security/advisories/GHSA-6ggm-pwr9-r5h2nvdWEB
leanprover.zulipchat.comnvdWEB

News mentions

No linked articles in our index yet.

cvss	0.000
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000