Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.
https://www.tenable.com/security/tns-2022-05
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.debian.org/security/2022/dsa-5073
https://security.gentoo.org/glsa/202209-24
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7FF2UH7MPXKTADYSJUAHI2Y5UHBSHUH/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/34NXVL2RZC2YZRV74ZQ3RNFB7WCEUP7D/
https://github.com/libexpat/libexpat/pull/551
https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
Source: Mitre, NVD
Published: 2022-01-26
Updated: 2025-05-05
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: High
EPSS: 0.02491
