apache/httpcomponents-client · Security
Apache HttpComponents Client: Connection Leak on Content-Encoding Decode Error Leads to Pool Exhaustion DoS
- GHSA ID
- GHSA-hjcp-jmpx-g3qm
- CVE ID
- CVE-2026-64607
- Severity
- medium
- Published
- Updated
- CVSS
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS v3
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description
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.
CWEs
- CWE-772 · Missing Release of Resource after Effective Lifetime
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-64607 ↗
- https://lists.apache.org/thread/qqfzo3fqcdk4l5496vz95ppvl4ty511q ↗
- https://github.com/apache/httpcomponents-client/commit/55733f4121f7ba26ddf04fe12739d9c15962cb94 ↗
- https://github.com/apache/httpcomponents-client/commit/ebac9512f555c4a355cad3f59ef2db69b597cc97 ↗
- https://github.com/apache/httpcomponents-client/releases/tag/rel/v5.6.3 ↗
- https://github.com/apache/httpcomponents-client/releases/tag/rel/v5.7-alpha1 ↗
- http://www.openwall.com/lists/oss-security/2026/08/13/5 ↗
- https://github.com/advisories/GHSA-hjcp-jmpx-g3qm ↗