CVE-2026-11972

{"id": "CVE-2026-11972", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-11972", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-24T15:33:49.665045Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "cna@python.org", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.2, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "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/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "cna@python.org", "affectedData": [{"repo": "https://github.com/python/cpython", "vendor": "Python Software Foundation", "modules": ["tarfile"], "product": "CPython", "versions": [{"status": "affected", "version": "0", "lessThan": "3.15.0", "versionType": "python"}], "defaultStatus": "unaffected"}]}], "published": "2026-06-23T23:16:49.033", "references": [{"url": "https://github.com/python/cpython/commit/3f031d431f80668e14f3bc066bbf4369cd9281b9", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/4ce6bf7c8aa7725828a38981c306f214c1f29365", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/7f0dc59c9a70f8f3b4da33d7c4a2ba552a7acc21", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/e86666c9dd256d52d0fbef6feb1ea4a51768fdec", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/eb63c0f94dfcbea7fda8eab6213818e134d67192", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/f50bf13566189c8d0ce5a814f33eff3d89951896", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/issues/151981", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/pull/151982", "source": "cna@python.org"}, {"url": "https://mail.python.org/archives/list/security-announce@python.org/thread/AXPSKKTSRKXTTJULW3XSIC74WZNAAPPB/", "source": "cna@python.org"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "cna@python.org", "description": [{"lang": "en", "value": "CWE-252"}, {"lang": "en", "value": "CWE-606"}, {"lang": "en", "value": "CWE-770"}]}], "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."}], "lastModified": "2026-06-30T16:16:43.190", "sourceIdentifier": "cna@python.org"}