Advisory severityCritical9.1Apache Software Foundation

Critical [CVE-2026-32327] 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

This critical-severity Apache Software Foundation advisory covers CVE-2026-32327.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-32327 Source published Aug 6, 2026Source updated Aug 7, 2026

VulniPulse record published Aug 6, 2026Record updated Aug 7, 2026

CVE-2026-32327

Affected products & platforms

Apache Software FoundationUnclassified

Open source advisory

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Summary

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 versions

1.6.3

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

1.6.4

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 1.6.4, which fixes this issue.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-32327 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-32327NVD CVE.org MITRE

Official resources

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Official documentation
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Apache project downloads (fixed releases)
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