CVE-2022-25235

CRITICAL9.8EPSS 11.0%

expat - security update

Published: 2/16/2022Modified: 4/28/2026

Description

xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.

Affected packages (4)

Alpine/expatfrom 0, < 2.2.10-r2
Debian/expatfrom 0, < 2.2.10-2+deb11u2
Debian/expatfrom 0, < 2.2.6-2+deb10u3
Debian/libxmltokfrom 0

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	CRITICAL9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (2)

ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2022-25235
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2022-25235