Vulnerability intelligence

CVE-2026-64607

Apache Software Foundation Apache HttpComponents Client CWE-772

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.

CVSS Score

5.3

Medium

EPSS — Exploit Probability

0.5%

Riskier than 38% of all CVEs · checked 2026-10-02

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

Patch available

Vendor fix published