CVE-2026-32327

Critical

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.

SeverityCritical

CVSS9.1

Exploit probability—

Product

Apache Apr-util

PublishedAug 6, 2026

First seenAug 6, 2026

Weakness typeCWE-674CWE-674

How to fix

Update

apache apr-util1.6.4 or later

Vendor advisories

lists.apache.org/thread/hq27vj8yfno9tkwv0fpj6jksfzgxvth1

Affected products

Product	Affected versions	Fixed in
apache apr-util	v < 1.6.4	1.6.4

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