CVE-2026-7774

{"id": "CVE-2026-7774", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-7774", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-04T17:27:23.917872Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "cna@python.org", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "ACTIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "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": "3.10.21", "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": "3.13.14", "versionType": "python"}, {"status": "affected", "version": "3.14.0", "lessThan": "3.14.6", "versionType": "python"}, {"status": "affected", "version": "3.15.0a1", "lessThan": "3.15.0b2", "versionType": "python"}], "defaultStatus": "unaffected"}]}], "published": "2026-06-04T16:16:42.103", "references": [{"url": "https://github.com/python/cpython/commit/0478bd83d82b255e0f29f613367a59d261e7eaa2", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/0d28f5e46e151718972dfabd91205444d0037b6d", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/10a13bee3c24f9c62b602e696334ff2272a40efc", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/578411982c16f753f4893532510099ef665117da", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/5cf47a248c35c375d610b87b2f72fd1ed454b558", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/74cca9a92fb7d653e404843a56b8bdc7b0afdbbf", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/c063191cb7f9170f9565e305f8aa2b79ab2bf609", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/issues/149486", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/pull/149487", "source": "cna@python.org"}, {"url": "https://mail.python.org/archives/list/security-announce@python.org/thread/4FU62L2M6RMMHT2QPGQNPEHHUND7CEX5/", "source": "cna@python.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/06/04/9", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "cna@python.org", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "tarfile.data_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() to write files outside the destination directory, subject to the permissions of the extracting process."}, {"lang": "es", "value": "tarfile.data_filter podr\u00eda ser eludido utilizando entradas de enlace manipuladas, incluyendo enlaces simb\u00f3licos con nombres vac\u00edos o similares a directorios, para redirigir miembros posteriores del archivo fuera del directorio de extracci\u00f3n previsto. Esto permit\u00eda que un archivo tar malicioso causara que tarfile.extractall() escribiera archivos fuera del directorio de destino, sujeto a los permisos del proceso de extracci\u00f3n."}], "lastModified": "2026-08-13T01:16:55.783", "sourceIdentifier": "cna@python.org"}