CVE-2026-86138

Published Sep 5, 2026

Last updated 2 days ago

Overview

Description
In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.
Source
cve@mitre.org
NVD status
Analyzed
Products
libxml2

Risk scores

CVSS 3.1

Type
Primary
Base score
7.8
Impact score
5.9
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

cve@mitre.org
CWE-190

Social media

Hype score
Not currently trending

Configurations