Vulnerability-Lookup

GHSA-6GGM-PWR9-R5H2

Vulnerability from github – Published: 2026-03-16 16:39 – Updated: 2026-03-16 16:39

Summary

XSS in @leanprover/unicode-input-component

Details

Impact

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.

Patches

The issue has been resolved in 0.2.0.

Workarounds

Replace the unicode input component with a basic HTML text field.

Severity

0.0 (None)


                  
                    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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@leanprover/unicode-input-component"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-32732"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-80"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-16T16:39:55Z",
    "nvd_published_at": "2026-03-16T14:19:43Z",
    "severity": "LOW"
  },
  "details": "### Impact\nProjects that use [@leanprover/unicode-input-component](https://www.npmjs.com/package/@leanprover/unicode-input-component) are vulnerable to an XSS exploit in 0.1.9 of the package and lower. \nThe component re-inserted text in the input element back into the input element as unescaped HTML.\n\n### Patches\nThe issue has been resolved in 0.2.0.\n\n### Workarounds\nReplace the unicode input component with a basic HTML text field.",
  "id": "GHSA-6ggm-pwr9-r5h2",
  "modified": "2026-03-16T16:39:55Z",
  "published": "2026-03-16T16:39:55Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/leanprover/vscode-lean4/security/advisories/GHSA-6ggm-pwr9-r5h2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32732"
    },
    {
      "type": "WEB",
      "url": "https://github.com/leanprover/vscode-lean4/pull/735"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/leanprover/vscode-lean4"
    },
    {
      "type": "WEB",
      "url": "https://leanprover.zulipchat.com/#narrow/channel/113488-general/topic/weird.20behavior.20in.20loogle.20searchbar/near/578502003"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "XSS in @leanprover/unicode-input-component"
}

CVE-2026-32732 (GCVE-0-2026-32732)

Vulnerability from cvelistv5 – Published: 2026-03-13 21:43 – Updated: 2026-03-16 20:22

Title

XSS in @leanprover/unicode-input-component

Summary

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.

Severity

0 (None)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-16 20:09 UTC

CWE

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

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/leanprover/vscode-lean4/securi…	x_refsource_CONFIRM
https://github.com/leanprover/vscode-lean4/pull/735	x_refsource_MISC
https://leanprover.zulipchat.com/#narrow/channel/…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
leanprover	vscode-lean4	Affected: < 0.2.0

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-32732",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-16T20:09:27.977368Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-16T20:22:43.428Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "vscode-lean4",
          "vendor": "leanprover",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.2.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-80",
              "description": "CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-13T21:43:22.209Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "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"
        },
        {
          "name": "https://github.com/leanprover/vscode-lean4/pull/735",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/leanprover/vscode-lean4/pull/735"
        },
        {
          "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"
        }
      ],
      "source": {
        "advisory": "GHSA-6ggm-pwr9-r5h2",
        "discovery": "UNKNOWN"
      },
      "title": "XSS in @leanprover/unicode-input-component"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-32732",
    "datePublished": "2026-03-13T21:43:22.209Z",
    "dateReserved": "2026-03-13T15:02:00.627Z",
    "dateUpdated": "2026-03-16T20:22:43.428Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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