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CVE-2026-32327

Apache Apr-util denial of service

9.1 CRITICALEPSS 0.46%
  1. Published6 Aug 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

Apache Apr-util< 1.6.4

Remediation

Fixed in
Apache Apr-util≥ 1.6.4

References

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Frequently asked

Is CVE-2026-32327 being actively exploited?

CVE-2026-32327 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.46%.

How severe is CVE-2026-32327?

CVE-2026-32327 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.46% probability of exploitation.

Which products are affected by CVE-2026-32327?

Affected products include Apache Apr-util.

How do I fix CVE-2026-32327?

Upgrade affected software to a fixed version, for example Apache Apr-util 1.6.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-32327 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.