CVE-2026-56403EPSS p5.5%

CVE-2026-56403CVE-2026-56403

libexpat_project / libexpat

Description

libexpat before 2.8.2 has an integer overflow in storeAtts.

Scoring

CVSS 6.9 ()
VectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
EPSS0.17% probability of exploitation · percentile 5.5% · 2026-10-05T12:00:23Z
Last modified2026-06-23
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.