Missing Release of Resource after Effective Lifetime in Apache HttpComponents Client - CVE-2026-64607
Published: August 24, 2026
Vulnerability identifier: #VU144885
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64607
CWE-ID: CWE-772
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper resource management in the classic i/o model HttpClient connection handling when processing a response with an invalid or unsupported content-encoding header value. A remote attacker can send a response with an invalid or unsupported content-encoding header value to cause a denial of service.
Only the classic i/o model is affected; the async i/o model is not affected.
Affected software
Apache HttpComponents Client
How to mitigate CVE-2026-64607
Install security update from vendor's website.
Apache HttpComponents Client - update to 5.6.3