CVE-2022-2309

lxml: NULL Pointer Dereference in lxml

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Severity

Moderate

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · July 5, 2022

Updated · November 21, 2025

Description

A NULL Pointer dereference vulnerability found in lxml, caused by the iterwalk function (also used by the canonicalize function). This flaw can lead to a crash when the incorrect parser input occurs together with usages.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference