CVE-2022-43680

HIGH7.5EPSS 0.39%

expat - security update

Published: 10/24/2022Modified: 3/9/2026

Also known as:DSA-5266-1ALPINE-CVE-2022-43680DEBIAN-CVE-2022-43680DLA-3165-1

Description

In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations.

Affected packages (5)

Alpine/expatfrom 0, < 2.2.10-r8
Debian/expatfrom 0, < 2.2.10-2+deb11u5
Debian/expatfrom 0, < 2.2.6-2+deb10u6
Debian/expatfrom 0, < 2.2.10-2+deb11u5
Debian/libxmltokfrom 0

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	HIGH7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References (2)

ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2022-43680
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2022-43680