What is CVE-2026-64607?

CVE-2026-64607 is a medium-severity vulnerability in Apache Software Foundation Httpcomponents Client, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 5.3/10. Published 2026-07-31.

How severe is CVE-2026-64607?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Apache Software Foundation Httpcomponents Client

CVE-2026-64607

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 t…

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Apache Software Foundation Httpcomponents Client — versions 5.0-alpha

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

security@apache.org (vendor-advisory)

Frequently asked questions

What is CVE-2026-64607?: CVE-2026-64607 is a medium-severity vulnerability in Apache Software Foundation Httpcomponents Client, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 5.3/10. Published 2026-07-31.
How severe is CVE-2026-64607?: Medium severity. CVSS v3 base score is 5.3 out of 10.