CVE Database›Document archive›CVE-2021-45960

CVE-2021-45960

expat: Large number of prefixed XML attributes on a single tag can crash libexpat

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Severity

Moderate

Red Hat Product Security

8.8

CVSS 3.1

Review impact separately from score.

Published · January 17, 2022

Updated · October 14, 2026

Description

expat (libexpat) is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to buffer overrun. The highest threat from this vulnerability is to availability.

Statement

Red Hat Product Security has rated this CVE based on the configurations of a default install in the context of SELinux enforcement and services run as non privileged users.

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 · 8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-1335 · Incorrect Bitwise Shift of Integer