CVE-2026-4224EPSS p51.1%

CVE-2026-4224CVE-2026-4224

python / python

Description

When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.

Scoring

CVSS 7.5 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS0.69% probability of exploitation · percentile 51.1% · 2026-10-05T12:00:23Z
Last modified2026-08-13

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.