PT-2026-66745 · Apache · Apache Httpcomponents Httpclient

CVE-2026-64607 · Published 2026-07-31 · Updated 2026-07-31

NVD

CVSS v3.1

5.3

Medium

Base vector

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

HttpClient based on the classic i/o model fails to correctly release the underlying connection back to the connection manager if it encounters an invalid or unsupported Content-Encoding header value in the response message. Please note this defect does not affect HttpClient based on the async i/o model.

This issue affects Apache HttpComponents Client: from 5.0-alpha1 through 5.6.2.

Fix

Missing Release of Resource after Effective Lifetime

Weakness Enumeration

CWE-772

Related Identifiers

CVE-2026-64607

Affected Products

Apache Httpcomponents Httpclient

References · 2

• https://lists.apache.org/thread/qqfzo3fqcdk4l5496vz95ppvl4ty511q · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-64607 · Security Note