{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-7210","assignerOrgId":"28c92f92-d60d-412d-b760-e73465c3df22","state":"PUBLISHED","assignerShortName":"PSF","dateReserved":"2026-04-27T14:43:40.042Z","datePublished":"2026-05-11T17:19:09.784Z","dateUpdated":"2026-05-11T20:34:17.811Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","modules":["xml","expat"],"product":"CPython","repo":"https://github.com/python/cpython","vendor":"Python Software Foundation","versions":[{"lessThan":"3.15.0","status":"affected","version":"0","versionType":"python"}]}],"credits":[{"lang":"en","type":"coordinator","value":"Stan Ulbrych (https://github.com/StanFromIreland)"},{"lang":"en","type":"remediation reviewer","value":"Gregory P. Smith (https://github.com/gpshead)"}],"descriptions":[{"lang":"en","supportingMedia":[{"type":"text/html","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."}],"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."}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","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:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-331","description":"CWE-331 Insufficient entropy","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"28c92f92-d60d-412d-b760-e73465c3df22","shortName":"PSF","dateUpdated":"2026-05-11T17:19:09.784Z"},"references":[{"tags":["vendor-advisory"],"url":"https://mail.python.org/archives/list/security-announce@python.org/thread/PNY5OMBDPM2FRUZTWFFPJ6LISWKV627K/"},{"tags":["patch"],"url":"https://github.com/python/cpython/pull/149023"},{"tags":["issue-tracking"],"url":"https://github.com/python/cpython/issues/149018"}],"source":{"discovery":"UNKNOWN"},"title":"The expat and elementtree parsers use insufficient entropy for XML hash-flooding protection"},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-11T18:53:57.884366Z","id":"CVE-2026-7210","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-11T18:54:12.868Z"}},{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/05/11/8"},{"url":"http://www.openwall.com/lists/oss-security/2026/05/11/13"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-05-11T20:34:17.811Z"}}]}}