CVE-2026-7210

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"NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "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": ["xml", "expat"], "product": "CPython", "versions": [{"status": "affected", "version": "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": "2026-05-11T18:16:42.413", "references": [{"url": "https://github.com/python/cpython/commit/24b8f12544468e4cedf5bfbe25442fcd495391e4", "tags": ["Patch"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/3573b3b1ecbd99030a0b18658e1bfece771b2566", "tags": ["Patch"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/cbaecf9f16da611a646d507c1cbca265c588fc56", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/e37df2a6a71d6538698e2d3188a7c345b827640b", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/ea70712d1a8508e14e9677d44f838dab04dc0286", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/eeea765cb9d8f1fc3d8918b272ac3c477983f27a", "tags": ["Patch"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/fc9b11ff49cbc82e6f917d07a61517a2b5f3145f", "tags": ["Patch"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/issues/149018", "tags": ["Issue Tracking"], "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/pull/149023", "tags": ["Issue Tracking", "Patch"], "source": "cna@python.org"}, {"url": "https://mail.python.org/archives/list/security-announce@python.org/thread/PNY5OMBDPM2FRUZTWFFPJ6LISWKV627K/", "tags": ["Mailing List", "Third Party Advisory"], "source": "cna@python.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/05/11/13", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2026/05/11/8", "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-331"}]}], "descriptions": [{"lang": "en", "value": "`xml.parsers.expat` and `xml.etree.ElementTree` use insufficient entropy for Expat hash-flooding protection, which allows a crafted XML document to trigger hash flooding.\\r\\n\\r\\nFully mitigating this vulnerability requires both updating libexpat to 2.8.0 or later and applying this patch."}], "lastModified": "2026-08-14T01:19:08.237", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "16DAC42F-7128-49F8-B799-78D78580EC70", "versionEndExcluding": "3.13.14"}, {"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D93FC4C6-3E17-4FFD-97A5-7BAFACDCAF51", "versionEndExcluding": "3.14.6", "versionStartIncluding": "3.14.0"}, {"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:*:*:*:*:*:*", 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