CVE Explorer

CVE-2026-32732

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3cd91994f4dd94ef0aebdb3726a8203595348ae2ff7a7d5a0c317e992eb1f212

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"vscode-lean4","vendor":"leanprover","versions":[{"status":"affected","version":"< 0.2.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:464f1fe459a5e164f77ce9e5a6eb0d5c69fac8525e5fb58f3ccce0bb1015978d · sha256:244c4ab546d1b120… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":0,"baseSeverity":"NONE","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:464f1fe459a5e164f77ce9e5a6eb0d5c69fac8525e5fb58f3ccce0bb1015978d · sha256:244c4ab546d1b120… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-80","description":"CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:464f1fe459a5e164f77ce9e5a6eb0d5c69fac8525e5fb58f3ccce0bb1015978d · sha256:244c4ab546d1b120… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/leanprover/vscode-lean4/pull/735","tags":["x_refsource_MISC"],"url":"https://github.com/leanprover/vscode-lean4/pull/735"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:464f1fe459a5e164f77ce9e5a6eb0d5c69fac8525e5fb58f3ccce0bb1015978d · sha256:244c4ab546d1b120… · /containers/cna/references/1

{"name":"https://github.com/leanprover/vscode-lean4/security/advisories/GHSA-6ggm-pwr9-r5h2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/leanprover/vscode-lean4/security/advisories/GHSA-6ggm-pwr9-r5h2"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:464f1fe459a5e164f77ce9e5a6eb0d5c69fac8525e5fb58f3ccce0bb1015978d · sha256:244c4ab546d1b120… · /containers/cna/references/0

{"name":"https://leanprover.zulipchat.com/#narrow/channel/113488-general/topic/weird.20behavior.20in.20loogle.20searchbar/near/578502003","tags":["x_refsource_MISC"],"url":"https://leanprover.zulipchat.com/#narrow/channel/113488-general/topic/weird.20behavior.20in.20loogle.20searchbar/near/578502003"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:464f1fe459a5e164f77ce9e5a6eb0d5c69fac8525e5fb58f3ccce0bb1015978d · sha256:244c4ab546d1b120… · /containers/cna/references/2

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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