CVE-2022-40303: exploitation status and patch state

CVE-2022-40303 · CVSS 7.5 HIGH · EPSS 23%

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault.

Is CVE-2022-40303 exploited?

Which products and versions are affected?

No affected package list recorded here yet.

Is there a patch?

No patch identifier recorded here yet.

What PlainSec published about CVE-2022-40303

PlainSec has not published a story about this CVE.

Primary sources

What this record does not say

KEV and EPSS are re-checked daily. Record last updated 2026-08-11.