Vulnerability-Lookup

GHSA-W5VR-8V7Q-W6RV

Vulnerability from github – Published: 2026-08-13 12:31 – Updated: 2026-09-08 20:41

Summary

baseline-browser-mapping process termination on invalid input causes denial of service

Details

baseline-browser-mapping 2.x before 2.11.0 calls process.exit() instead of throwing on invalid or conflicting input parameters, and can trigger immediate process termination, causing denial of service.

Severity

6.6 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "baseline-browser-mapping"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.11.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-45819"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-705"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-08T20:41:21Z",
    "nvd_published_at": "2026-08-13T12:17:23Z",
    "severity": "MODERATE"
  },
  "details": "baseline-browser-mapping 2.x before 2.11.0 calls process.exit() instead of throwing on invalid or conflicting input parameters, and can trigger immediate process termination, causing denial of service.",
  "id": "GHSA-w5vr-8v7q-w6rv",
  "modified": "2026-09-08T20:41:21Z",
  "published": "2026-08-13T12:31:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45819"
    },
    {
      "type": "WEB",
      "url": "https://github.com/web-platform-dx/baseline-browser-mapping/pull/137"
    },
    {
      "type": "WEB",
      "url": "https://github.com/web-platform-dx/baseline-browser-mapping/pull/137/changes#diff-7ae45ad102eab3b6d7e7896acd08c427a9b25b346470d7bc6507b6481575d519"
    },
    {
      "type": "WEB",
      "url": "https://github.com/web-platform-dx/baseline-browser-mapping/commit/de733e2d8959559f7bb255d5927f3afcb6f31589"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/web-platform-dx/baseline-browser-mapping"
    },
    {
      "type": "WEB",
      "url": "https://github.com/web-platform-dx/baseline-browser-mapping/blob/b7881aa61c8a057e24468ab5ee18c5ecedbbf691/src/index.ts#L142"
    },
    {
      "type": "WEB",
      "url": "https://github.com/web-platform-dx/baseline-browser-mapping/releases/tag/v2.11.0"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/package/baseline-browser-mapping"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber",
      "type": "CVSS_V4"
    }
  ],
  "summary": "baseline-browser-mapping process termination on invalid input causes denial of service"
}

CVE-2026-45819 (GCVE-0-2026-45819)

Vulnerability from cvelistv5 – Published: 2026-08-13 11:03 – Updated: 2026-08-13 14:46

Summary

Severity

6.6 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-13 14:45 UTC

CWE

CWE-705 - Incorrect Control Flow Scoping
CWE-755 - Improper Handling of Exceptional Conditions

Assigner

seal mitre root

References

3 references

URL	Tags
https://github.com/web-platform-dx/baseline-brows…
https://www.npmjs.com/package/baseline-browser-mapping
https://github.com/web-platform-dx/baseline-brows…	patch

Impacted products

1 product

Vendor	Product	Version
web-platform-dx	baseline-browser-mapping	Affected: 2.0.0 , < 2.11.0 (semver)

Credits

Seal Security

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-45819",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T14:45:42.399559Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-13T14:46:30.611Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Linux",
            "macOS",
            "Windows"
          ],
          "product": "baseline-browser-mapping",
          "vendor": "web-platform-dx",
          "versions": [
            {
              "lessThan": "2.11.0",
              "status": "affected",
              "version": "2.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Seal Security"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "baseline-browser-mapping 2.x before 2.11.0 calls process.exit() instead of throwing on invalid or conflicting input parameters, and can trigger immediate process termination, causing denial of service."
            }
          ],
          "value": "baseline-browser-mapping 2.x before 2.11.0 calls process.exit() instead of throwing on invalid or conflicting input parameters, and can trigger immediate process termination, causing denial of service."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-153",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-153 Input Data Manipulation: denial of service. The host process exits immediately and the caller cannot recover."
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "YES",
            "Recovery": "USER",
            "Safety": "NEGLIGIBLE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.6,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "UNREPORTED",
            "privilegesRequired": "NONE",
            "providerUrgency": "AMBER",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "DIFFUSE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "MODERATE"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-705",
              "description": "CWE-705 Incorrect Control Flow Scoping",
              "lang": "en",
              "type": "CWE"
            },
            {
              "cweId": "CWE-755",
              "description": "CWE-755 Improper Handling of Exceptional Conditions",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-13T11:03:42.504Z",
        "orgId": "22e2d327-25fe-45d7-9f0c-dcd23b7108df",
        "shortName": "seal"
      },
      "references": [
        {
          "url": "https://github.com/web-platform-dx/baseline-browser-mapping/blob/b7881aa61c8a057e24468ab5ee18c5ecedbbf691/src/index.ts#L142"
        },
        {
          "url": "https://www.npmjs.com/package/baseline-browser-mapping"
        },
        {
          "name": "Fix in 2.11.0: replace process.exit() with thrown errors (PR #137)",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/web-platform-dx/baseline-browser-mapping/pull/137/changes#diff-7ae45ad102eab3b6d7e7896acd08c427a9b25b346470d7bc6507b6481575d519"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "22e2d327-25fe-45d7-9f0c-dcd23b7108df",
    "assignerShortName": "seal",
    "cveId": "CVE-2026-45819",
    "datePublished": "2026-08-13T11:03:42.504Z",
    "dateReserved": "2026-05-13T12:03:13.544Z",
    "dateUpdated": "2026-08-13T14:46:30.611Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.
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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.
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GHSA-W5VR-8V7Q-W6RV

CVE-2026-45819 (GCVE-0-2026-45819)

Tags

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