CVE Database›Document archive›CVE-2022-25313

CVE-2022-25313

expat: Stack exhaustion in doctype parsing

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Severity

Moderate

Red Hat Product Security

6.5

CVSS 3.1

Review impact separately from score.

Published · February 19, 2022

Updated · November 2, 2026

Description

A flaw was found in expat. A stack exhaustion in doctype parsing could be triggered by a file with a large number of opening braces, resulting in a denial of service.

Statement

This flaw affects applications that leverage expat to parse untrusted XML files. Applications which only parse trusted XML files or do not process XML files at all are not affected by this flaw.

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

There is no known mitigation other than restricting applications using the expat library from processing untrusted XML content.

CVSS / CWE

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

CWE-776 · Improper Restriction of Recursive Entity References in DTDs