CVE & CISA-KEV Catalog

CVE-2026-32327

MEDIUM
5.3
CVSS v3
NVD

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.

CWE-674

How to fix

Remediation Available
apr-utilDebian
Fixed in:1.6.1-5+deb11u2CVE-2026-32327
Fixed in:1.6.3-1+deb12u1CVE-2026-32327
Fixed in:1.6.3-3+deb13u1CVE-2026-32327
Fixed in:1.6.4-1CVE-2026-32327
aprRed Hat / RHEL
Fixed in:util-main@x86_64RHSA-2026:58474
Fixed in:util-main@aarch64RHSA-2026:58474
Fixed in:util-main@srcRHSA-2026:58474
aprRocky
Fixed in:util-main@aarch64RHSA-2026:58474
Fixed in:util-main@srcRHSA-2026:58474
Fixed in:util-main@x86_64RHSA-2026:58474

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

0.46%probability of exploitation in 30 days
38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Vendor Advisory1
Third-Party Advisory1

Related Vulnerabilities

Other CWE-674 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2021-45105Medium5.9100%-Fix
CVE-2024-25111High8.665%-Fix
CVE-2023-50269High8.658%-Fix
CVE-2021-42697High7.536%-Fix
CVE-2018-0739Medium6.519%-Fix
CVE-2007-1285High7.518%-Fix

Common questions

How do I fix CVE-2026-32327?

Published advisories record a fix for 3 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-32327 being actively exploited?

Not that we know of. CVE-2026-32327 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.46% is the estimated probability that it will be exploited in the next 30 days. That is higher than 38% of all scored CVEs.

How severe is CVE-2026-32327?

CVE-2026-32327 has a CVSS v3 base score of 5.3, rated moderate. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-32327 affect?

Published advisories record a fix for apr-util (Debian), apr (Red Hat / RHEL), apr (Rocky). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-07.