CVE-2022-40674: libexpat project libexpat – CVSS 8.1 · Watchpost

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CVE-2022-40674

HIGH 8.1CVE-2022-40674 · Published 14/09/2022 · updated 14/10/2026

In short

CVE-2022-40674 is a HIGH (CVSS 8.1) vulnerability affecting libexpat (libexpat project).
Chance of exploitation in the next 30 days (EPSS): 2.3%, higher than 82.9% of all vulnerabilities.
Fix: update to 2.4.9 or later.

Package	Affected versions	Patched versions
libexpat libexpat_project	`< 2.4.9`	`2.4.9`

Description

libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c.

References

libexpat/libexpat#629 · Issue Tracking
libexpat/libexpat#640 · Issue Tracking
lists.debian.org/debian-lts-announce/2022/09/msg00029.html · Issue Tracking
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSVZN3IJ6OCPSJL7AEX3ZHSHAHFOGESK
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J2IGJNHFV53PYST7VQV3T4NHVYAMXA36
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LQB6FJAM5YQ35SF5B2MN25Y2FX56EOEZ
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2ZKEPGFCZ7R6DRVH3K6RBJPT42ZBEG
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGBVQQ47URGJAZWHCISHDWF6QBTV2LE
security.gentoo.org/glsa/202209-24 · Third Party Advisory
security.gentoo.org/glsa/202211-06 · Third Party Advisory
security.netapp.com/advisory/ntap-20221028-0008 · Third Party Advisory
debian.org/security/2022/dsa-5236 · Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-398330.html
cert-portal.siemens.com/productcert/html/ssa-558014.html
cert-portal.siemens.com/productcert/html/ssa-892048.html

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