CVE-2026-3087

{"id": "CVE-2026-3087", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-3087", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-28T13:38:08.747185Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "cna@python.org", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.0, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "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": ["shutil"], "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": "3.14.0a1", "lessThan": "3.14.5rc1", "versionType": "python"}, {"status": "affected", "version": "3.15.0a1", "lessThan": "3.15.0b1", "versionType": "python"}], "defaultStatus": "unaffected"}]}], "published": "2026-04-27T21:16:42.480", "references": [{"url": "https://github.com/python/cpython/commit/1071290169f85c09cf767c1099564a9426cdc7e8", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/65b255416ae217bf0e22085be3c1976cea18bd8c", "tags": ["Patch"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/7ef7dd0a74f47facd1fadcbc77f8fb03beb5eb4d", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/8e13025747e1ca72e86d1f35637123f9c306f0cb", "tags": ["Patch"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/8ee6aff14054b37b53e47194a2fa313e98163c94", "tags": ["Patch"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/a6650a2cdf0c49fb8ce0c982903aa2aa274beefe", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/ab5ef98af693bded74a738570e81ea70abef2840", "tags": ["Patch"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/b01e594fbe754a960212f908d047294e880b52fd", "tags": ["Patch"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/ba0aca3bffce431fe2fbd53ca4cd6a717a2e2c19", "tags": ["Patch"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/fc829e88753858c8ac669594bf0093f44948c0f4", "tags": ["Patch"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/issues/146581", "tags": ["Exploit", "Issue Tracking", "Patch", "Vendor Advisory"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/pull/146591", "tags": ["Issue Tracking", "Patch"], "source": "cna@python.org"}, {"url": "https://mail.python.org/archives/list/security-announce@python.org/thread/X6FXE5C6KDKOVNX3EC3DWD5RUPFWOZA4/", "tags": ["Mailing List", "Vendor Advisory"], "source": "cna@python.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/04/28/9", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "cna@python.org", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "If `shutil.unpack_archive()` is given a ZIP archive with an absolute Windows path containing a drive (`C:\\\\...`) then the archive will be extracted outside the target directory which is different than other operating systems. Only Windows is affected by this vulnerability."}], "lastModified": "2026-08-13T01:16:52.680", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8DA90507-80E6-4412-BBC7-F4D17DF6BCD7", "versionEndIncluding": "3.14.4"}, {"criteria": "cpe:2.3:a:python:python:3.15.0:alpha1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A3327507-0B1D-4F28-A983-D07A2C8A7696"}, {"criteria": "cpe:2.3:a:python:python:3.15.0:alpha2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C8AF17F1-A27F-4C98-BA5A-B4319710E8D1"}, {"criteria": "cpe:2.3:a:python:python:3.15.0:alpha3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "24CF56B0-2F4E-42A2-B655-F493AA0A4815"}, {"criteria": "cpe:2.3:a:python:python:3.15.0:alpha4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7184ABBA-B100-489E-B5C1-1C9EEC0546CA"}, {"criteria": "cpe:2.3:a:python:python:3.15.0:alpha5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B6D4181B-3E1B-499B-AAB1-50868A6A6AD3"}, {"criteria": "cpe:2.3:a:python:python:3.15.0:alpha6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A52F6DD2-717D-4E8C-8DB7-00890BC1ABAE"}, {"criteria": "cpe:2.3:a:python:python:3.15.0:alpha7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8C46C55C-801E-4F86-B669-8E6A12B4AB6F"}, {"criteria": "cpe:2.3:a:python:python:3.15.0:alpha8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A8DF8E5-61F9-4899-BF40-41A17E223441"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cna@python.org"}