Bug 2509736 (CVE-2026-64607) - CVE-2026-64607 org.apache.httpcomponents.client5/httpclient5: Apache HttpComponents Client: Denial of Service due to connection leak
Summary: CVE-2026-64607 org.apache.httpcomponents.client5/httpclient5: Apache HttpComp...
Keywords:
Status: NEW
Alias: CVE-2026-64607
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-31 11:01 UTC by OSIDB Bzimport
Modified: 2026-09-24 19:57 UTC (History)
48 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:63302 0 None None None 2026-09-03 18:34:14 UTC
Red Hat Product Errata RHSA-2026:71675 0 None None None 2026-09-24 19:57:02 UTC

Description OSIDB Bzimport 2026-07-31 11:01:14 UTC 
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.
Comment 2 errata-xmlrpc 2026-09-03 18:34:11 UTC 
This issue has been addressed in the following products:

  Red Hat Build of Apache Camel 3.33 for Quarkus 3.33.3.SP1

Via RHSA-2026:63302 https://access.redhat.com/errata/RHSA-2026:63302
Comment 3 Jon Orris 2026-09-24 19:57:00 UTC 
This issue has been addressed in the following products:

  Red Hat build of Apache Camel 4.18.4 for Spring Boot 3.5.16

Via RHSA-2026:71675 https://access.redhat.com/errata/RHSA-2026:71675
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