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.
Metrics
CVSS 3.1 9.1/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Portable Runtime Utility | <= 1.6.3 |
References
- https://lists.apache.org/thread/hq27vj8yfno9tkwv0fpj6jksfzgxvth1Mailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/08/06/9Mailing List, Third Party Advisory
Timeline
- Published
- Aug 6, 2026
- Last modified
- Oct 24, 2026
- NVD status
- Analyzed