Vulnerabilities CVE-2026-7210

CVE-2026-7210

Medium

Open

TLP:CLEAR

The expat and elementtree parsers use insufficient entropy for XML hash-flooding protection

NVD CVE.org

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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.

Details

CVSS Score: 6.3
EPSS Score ⓘ: 0.81%

53.7th percentile
CVSS 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
Confidence: 90%
Published: May 11, 2026
Last Modified: Aug 14, 2026

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