CVE-2026-11972

{
  "id": "CVE-2026-11972",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-23T23:16:49.033",
  "lastModified": "2026-10-25T23:10:00.167",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "When using the \"tarfile\" module with a file opened in \"streaming mode\" (mode=\"r|\") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer."
    },
    {
      "lang": "es",
      "value": "Cuando se utiliza el módulo ’tarfile’ con un archivo abierto en ’modo de transmisión’ (modo=’r|’), el módulo tarfile no manejaba correctamente el EOF, haciendo que el análisis del archivo tomara exponencialmente más tiempo."
    }
  ],
  "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": "3.10.21",
              "versionType": "python",
              "status": "affected"
            },
            {
              "version": "3.11.0",
              "lessThan": "3.11.16",
              "versionType": "python",
              "status": "affected"
            },
            {
              "version": "3.12.0",
              "lessThan": "3.12.14",
              "versionType": "python",
              "status": "affected"
            },
            {
              "version": "3.13.0",
              "lessThan": "3.13.15",
              "versionType": "python",
              "status": "affected"
            },
            {
              "version": "3.14.0",
              "lessThan": "3.14.7",
              "versionType": "python",
              "status": "affected"
            },
            {
              "version": "3.15.0a1",
              "lessThan": "3.15.0b4",
              "versionType": "python",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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": 8.2,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "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"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-24T15:33:49.665045Z",
          "id": "CVE-2026-11972",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-252"
        },
        {
          "lang": "en",
          "value": "CWE-606"
        },
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/python/cpython/commit/3f031d431f80668e14f3bc066bbf4369cd9281b9",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/4ce6bf7c8aa7725828a38981c306f214c1f29365",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/7f0dc59c9a70f8f3b4da33d7c4a2ba552a7acc21",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/e86666c9dd256d52d0fbef6feb1ea4a51768fdec",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/eb63c0f94dfcbea7fda8eab6213818e134d67192",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/f50bf13566189c8d0ce5a814f33eff3d89951896",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/f5e2776ff0383a902c12acf2b703e7e951fc8438",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/issues/151981",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/pull/151982",
      "source": "[email protected]"
    },
    {
      "url": "https://mail.python.org/archives/list/[email protected]/thread/AXPSKKTSRKXTTJULW3XSIC74WZNAAPPB/",
      "source": "[email protected]"
    }
  ]
}