{
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    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-11972",
        "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "state": "PUBLISHED",
        "assignerShortName": "PSF",
        "dateReserved": "2026-06-11T11:35:05.520Z",
        "datePublished": "2026-06-23T22:02:45.434Z",
        "dateUpdated": "2026-08-13T00:28:46.899Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "modules": [
                        "tarfile"
                    ],
                    "product": "CPython",
                    "repo": "https://github.com/python/cpython",
                    "vendor": "Python Software Foundation",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "3.10.21",
                            "status": "affected",
                            "versionType": "python"
                        },
                        {
                            "version": "3.11.0",
                            "lessThan": "3.11.16",
                            "status": "affected",
                            "versionType": "python"
                        },
                        {
                            "version": "3.12.0",
                            "lessThan": "3.12.14",
                            "status": "affected",
                            "versionType": "python"
                        },
                        {
                            "version": "3.13.0",
                            "lessThan": "3.13.15",
                            "status": "affected",
                            "versionType": "python"
                        },
                        {
                            "version": "3.14.0",
                            "lessThan": "3.14.7",
                            "status": "affected",
                            "versionType": "python"
                        },
                        {
                            "version": "3.15.0a1",
                            "lessThan": "3.15.0b4",
                            "status": "affected",
                            "versionType": "python"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "reporter",
                    "value": "Ryan Hileman (https://github.com/lunixbochs)"
                },
                {
                    "lang": "en",
                    "type": "coordinator",
                    "value": "Petr Viktorin (https://github.com/encukou)"
                },
                {
                    "lang": "en",
                    "type": "remediation reviewer",
                    "value": "Stan Ulbrych (https://github.com/StanFromIreland)"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "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."
                        }
                    ],
                    "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."
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "attackVector": "NETWORK",
                        "baseScore": 8.2,
                        "baseSeverity": "HIGH",
                        "exploitMaturity": "NOT_DEFINED",
                        "privilegesRequired": "NONE",
                        "providerUrgency": "NOT_DEFINED",
                        "subAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "userInteraction": "NONE",
                        "valueDensity": "NOT_DEFINED",
                        "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",
                        "version": "4.0",
                        "vulnAvailabilityImpact": "HIGH",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnerabilityResponseEffort": "NOT_DEFINED"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-252",
                            "description": "CWE-252",
                            "lang": "en",
                            "type": "CWE"
                        },
                        {
                            "cweId": "CWE-606",
                            "description": "CWE-606",
                            "lang": "en",
                            "type": "CWE"
                        },
                        {
                            "cweId": "CWE-770",
                            "description": "CWE-770",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
                "shortName": "PSF",
                "dateUpdated": "2026-08-13T00:28:46.899Z"
            },
            "references": [
                {
                    "tags": [
                        "issue-tracking"
                    ],
                    "url": "https://github.com/python/cpython/issues/151981"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/pull/151982"
                },
                {
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/AXPSKKTSRKXTTJULW3XSIC74WZNAAPPB/"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/commit/3f031d431f80668e14f3bc066bbf4369cd9281b9"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/commit/4ce6bf7c8aa7725828a38981c306f214c1f29365"
                },
                {
                    "tags": [
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                    "url": "https://github.com/python/cpython/commit/7f0dc59c9a70f8f3b4da33d7c4a2ba552a7acc21"
                },
                {
                    "tags": [
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                    "url": "https://github.com/python/cpython/commit/e86666c9dd256d52d0fbef6feb1ea4a51768fdec"
                },
                {
                    "tags": [
                        "patch"
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                    "url": "https://github.com/python/cpython/commit/eb63c0f94dfcbea7fda8eab6213818e134d67192"
                },
                {
                    "tags": [
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                    "url": "https://github.com/python/cpython/commit/f50bf13566189c8d0ce5a814f33eff3d89951896"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/commit/f5e2776ff0383a902c12acf2b703e7e951fc8438"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "title": "tarfile opened in streaming mode mishandles EOF",
            "x_generator": {
                "engine": "cvelib 1.8.0"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-06-24T15:33:49.665045Z",
                                "id": "CVE-2026-11972",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-06-24T15:34:06.959Z"
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    }
}