CVE-2023-28484

In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

1.2% chance of exploitation in the next 30 days; higher than 69% of CVEs (scores of 2026-10-25)

CWE

CWE-476

Published

2023-04-24

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• xmlsoft:libxml2

References

• https://gitlab.gnome.org/GNOME/libxml2/-/issues/491
• https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4
• https://lists.debian.org/debian-lts-announce/2023/04/msg00031.html
• https://security.netapp.com/advisory/ntap-20230601-0006/
• https://security.netapp.com/advisory/ntap-20240201-0005/

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