5.3

CVE-2026-64607

Apache HttpComponents Client: Connection Leak on Content-Encoding Decode Error Leads to Pool Exhaustion DoS

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Apache ≫ Httpclient Version >= 5.0.0 < 5.6.3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.36% 0.289
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CISA-ADP 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-772 Missing Release of Resource after Effective Lifetime

The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.

https://lists.apache.org/thread/qqfzo3fqcdk4l5496vz95ppvl4ty511q
Mailing List
Release Notes
http://www.openwall.com/lists/oss-security/2026/08/13/5