SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAwaiting Analysis

CVE-2026-86139

In libxml2 before 2.15.4, xmlURIEscapeStr in uri.c has an integer overflow.

MEDIUM 6.9EPSS 0.11%

Does this matter?

Lower severity and a low EPSS score (0.11%). Track it; it rarely justifies an emergency change on its own.

Description

In libxml2 before 2.15.4, xmlURIEscapeStr in uri.c has an integer overflow.

CVSS 3.1
6.9 MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
EPSS
0.11% probability · 1th percentile
CISA KEV
Not listed
Weakness
CWE-190
Source
cve@mitre.org

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.