{"cve":"CVE-2026-7210","nvd":{"published":"2026-05-11T18:16:42.413","modified":"2026-10-02T01:16:44.320","status":"Modified","description":"`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.","cvss_v4":{"vector":"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","score":6.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-331"],"references":["https://github.com/python/cpython/commit/24b8f12544468e4cedf5bfbe25442fcd495391e4","https://github.com/python/cpython/commit/3573b3b1ecbd99030a0b18658e1bfece771b2566","https://github.com/python/cpython/commit/cbaecf9f16da611a646d507c1cbca265c588fc56","https://github.com/python/cpython/commit/e37df2a6a71d6538698e2d3188a7c345b827640b","https://github.com/python/cpython/commit/ea70712d1a8508e14e9677d44f838dab04dc0286"],"products":["python:python"],"source":"nvd","synced_at":"2026-10-19T22:33:55.586217763+00:00"},"epss":{"cve":"CVE-2026-7210","score":0.00672,"percentile":0.51764,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}