CVE-2026-32327: CWE-674 Uncontrolled Recursion in Apache Software Foundation Apache Portable Runtime Utility
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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-32327) affects Apache Portable Runtime Utility (APR-util) versions 1.6.3 and earlier. The flaw is an uncontrolled recursion (CWE-674) in the apr_xml_quote_elem() function, which is used when parsing XML data from untrusted sources. This can allow an attacker to trigger a stack recursion attack against any library consumer using this function. The Apache Software Foundation has fixed this issue in APR-util version 1.6.4.
Potential Impact
The vulnerability allows a stack recursion attack, which can cause a denial of service or crash in applications using the affected function to parse XML from untrusted sources. No known exploits in the wild have been reported. The impact is limited to applications that use apr_xml_quote_elem() with untrusted XML input.
Mitigation Recommendations
Users should upgrade to Apache Portable Runtime Utility version 1.6.4 or later, which contains the fix for this vulnerability. No other mitigations are specified. Patch status is confirmed by the vendor's recommendation to upgrade to 1.6.4.
CVE-2026-32327: CWE-674 Uncontrolled Recursion in Apache Software Foundation Apache Portable Runtime Utility
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.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-32327) affects Apache Portable Runtime Utility (APR-util) versions 1.6.3 and earlier. The flaw is an uncontrolled recursion (CWE-674) in the apr_xml_quote_elem() function, which is used when parsing XML data from untrusted sources. This can allow an attacker to trigger a stack recursion attack against any library consumer using this function. The Apache Software Foundation has fixed this issue in APR-util version 1.6.4.
Potential Impact
The vulnerability allows a stack recursion attack, which can cause a denial of service or crash in applications using the affected function to parse XML from untrusted sources. No known exploits in the wild have been reported. The impact is limited to applications that use apr_xml_quote_elem() with untrusted XML input.
Mitigation Recommendations
Users should upgrade to Apache Portable Runtime Utility version 1.6.4 or later, which contains the fix for this vulnerability. No other mitigations are specified. Patch status is confirmed by the vendor's recommendation to upgrade to 1.6.4.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-03-12T08:57:52.096Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a749d35bf8831d539db9dff
Added to database: 08/06/2026, 14:41:57 UTC
Last enriched: 08/06/2026, 15:44:01 UTC
Last updated: 08/07/2026, 03:40:59 UTC
Views: 3
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