{
  "containers": {
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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-109380",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-10-13T15:39:56.714376Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-13T15:40:11.463Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/modern-tar",
          "product": "modern-tar",
          "repo": "https://github.com/ayuhito/modern-tar",
          "vendor": "ayuhito",
          "versions": [
            {
              "lessThanOrEqual": "0.8.5",
              "status": "affected",
              "version": "0.3.5",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Lum Humolli"
        }
      ],
      "datePublic": "2026-10-08T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "modern-tar 0.3.5 through 0.8.5 contains a memory exhaustion vulnerability that allows attackers to produce negative entry sizes via non-octal bytes parsed by readOctal(). Attackers can supply a crafted, optionally gzip-compressed, archive to unpackTar() that buffers chunks indefinitely, exhausting process memory and suppressing later entries."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "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",
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            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
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            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1284",
              "description": "Improper Validation of Specified Quantity in Input",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-12T20:55:11.774Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Pull Request #195",
          "tags": [
            "issue-tracking",
            "patch"
          ],
          "url": "https://github.com/ayuhito/modern-tar/pull/195"
        },
        {
          "name": "Patch Commit",
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            "patch"
          ],
          "url": "https://github.com/ayuhito/modern-tar/commit/181c8cb75351867535057817ada4802a90fe416e"
        },
        {
          "name": "Vulnerable code in encoding.ts",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/ayuhito/modern-tar/blob/v0.8.5/src/tar/encoding.ts"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/ayuhito/modern-tar"
        },
        {
          "name": "VulnCheck Advisory: modern-tar 0.3.5 through 0.8.5 Memory Exhaustion via Malformed Octal Size Field",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/modern-tar-0.3.5-through-0.8.5-memory-exhaustion-via-malformed-octal-size-field"
        }
      ],
      "title": "modern-tar 0.3.5 through 0.8.5 Memory Exhaustion via Malformed Octal Size Field",
      "x_generator": {
        "engine": "vulncheck-endgame"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-109380",
    "datePublished": "2026-10-12T20:55:11.774Z",
    "dateReserved": "2026-10-12T14:23:25.691Z",
    "dateUpdated": "2026-10-13T15:40:11.463Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2"
}