CVE-2026-114583

{
  "id": "CVE-2026-114583",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-22T21:17:16.543",
  "lastModified": "2026-10-27T01:19:05.420",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with filter=\"tar\" to write files outside the destination directory, subject to the permissions of the extracting process.\n\nThis is the tarfile.tar_filter counterpart of CVE-2026-7774, which covered tarfile.data_filter."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Python Software Foundation",
          "product": "CPython",
          "defaultStatus": "unaffected",
          "modules": [
            "tarfile"
          ],
          "repo": "https://github.com/python/cpython",
          "versions": [
            {
              "version": "0",
              "lessThan": "3.11.18",
              "versionType": "python",
              "status": "affected"
            },
            {
              "version": "3.12.0",
              "lessThan": "3.12.16",
              "versionType": "python",
              "status": "affected"
            },
            {
              "version": "3.13.0",
              "lessThan": "3.13.18",
              "versionType": "python",
              "status": "affected"
            },
            {
              "version": "3.14.0",
              "lessThan": "3.14.10",
              "versionType": "python",
              "status": "affected"
            },
            {
              "version": "3.15.0",
              "lessThan": "3.15.2",
              "versionType": "python",
              "status": "affected"
            },
            {
              "version": "3.16.0a1",
              "lessThan": "3.16.0",
              "versionType": "python",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "baseScore": 6.9,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ]
  },
  "references": [
    {
      "url": "https://github.com/python/cpython/commit/04d8fca7da2cf3ebc0881fec8a53a1330c3b665d",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/0901ad4ffb22605f12b705d1c1197f0a01f0ba0b",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/bc93f8ad4c4a0f92d184ec8fccc8ff8a651dcec2",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/c6ada40177436e4e2533a7b252082b5f0c043477",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/e7e0b3523ad6ba8472873dda594cf4021a16f8b5",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/f4401da82e2baec5dab06cf070fbca77d53220f0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/issues/160097",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/pull/160098",
      "source": "[email protected]"
    },
    {
      "url": "https://mail.python.org/archives/list/[email protected]/thread/43JOWPRAV5DI3VZ4FUEUAZOHCATXXOCK/",
      "source": "[email protected]"
    }
  ]
}