CVE-2026-7210
The expat and elementtree parsers use insufficient entropy for XML hash-flooding protection
`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:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Productos afectados
Python Software Foundation · CPython¿Quieres saber si tu infraestructura está expuesta a esto?
Hablar con TrueHacking →Referencias
https://github.com/python/cpython/commit/24b8f12544468e4cedf5bfbe25442fcd495391e4https://github.com/python/cpython/commit/3573b3b1ecbd99030a0b18658e1bfece771b2566https://github.com/python/cpython/commit/eeea765cb9d8f1fc3d8918b272ac3c477983f27ahttps://github.com/python/cpython/commit/fc9b11ff49cbc82e6f917d07a61517a2b5f3145fhttps://github.com/python/cpython/issues/149018https://github.com/python/cpython/pull/149023https://mail.python.org/archives/list/security-announce@python.org/thread/PNY5OMBDPM2FRUZTWFFPJ6LISWKV627K/http://www.openwall.com/lists/oss-security/2026/05/11/13http://www.openwall.com/lists/oss-security/2026/05/11/8