CVE-2026-32327

CRITICAL

Apache Portable Runtime Utility: apr-util XML stack recursion crash

Title source: cna
STIX 2.1

Description

A bug in APR-util version 1.6.3 (and earlier) allows a stack recursion attack against any library consumer which parses XML from untrusted sources and uses the apr_xml_quote_elem() function. Users are recommended to upgrade to version 1.6.4, which fixes this issue.

References (2)

Core 2

Scores

CVSS v3 9.1
EPSS 0.0048
EPSS Percentile 38.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-674
Status published
Products (2)
apache/apr-util < 1.6.4
Apache Software Foundation/Apache Portable Runtime Utility < 1.6.3
Published Aug 06, 2026
Tracked Since Aug 06, 2026