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CVE-2026-32776

libexpat: libexpat: Denial of Service due to NULL pointer dereference

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Severity

Moderate

Red Hat Product Security

6.2

CVSS 3.1

Review impact separately from score.

Published · March 16, 2026

Updated · July 3, 2026

Description

A flaw was found in libexpat. A remote attacker could exploit this vulnerability by providing specially crafted XML content with empty external parameter entities. This could lead to a NULL pointer dereference, causing the application to crash and resulting in a Denial of Service (DoS).

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

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

CVSS / CWE

CVSS 3.1 · 6.2
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference