CVE-2026-56406

Published Jun 21, 2026

Last updated 16 hours ago

Overview

Description
libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Parse.
Source
cve@mitre.org
NVD status
Analyzed
Products
libexpat

Risk scores

CVSS 3.1

Type
Secondary
Base score
6.9
Impact score
5.5
Exploitability score
1.4
Vector string
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Severity
MEDIUM

Weaknesses

cve@mitre.org
CWE-190

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.