GHSA-hjcp-jmpx-g3qm
Apache HttpComponents Client: Connection Leak on Content-Encoding Decode Error Leads to Pool Exhaustion DoS
At a glance
- Published
- Updated
- CVE
- CVE-2026-64607
- CVSS_V3
- 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.
Affected packages
| Package | Versions |
|---|---|
| Maven · org.apache.httpcomponents.client5:httpclient5 | introduced 5.0-alpha1, fixed 5.6.3 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-64607 ADVISORY
- https://github.com/apache/httpcomponents-client/commit/55733f4121f7ba26ddf04fe12739d9c15962cb94 WEB
- https://github.com/apache/httpcomponents-client/commit/ebac9512f555c4a355cad3f59ef2db69b597cc97 WEB
- https://github.com/apache/httpcomponents-client PACKAGE
- https://github.com/apache/httpcomponents-client/releases/tag/rel/v5.6.3 WEB
- https://github.com/apache/httpcomponents-client/releases/tag/rel/v5.7-alpha1 WEB
- https://lists.apache.org/thread/qqfzo3fqcdk4l5496vz95ppvl4ty511q WEB
- http://www.openwall.com/lists/oss-security/2026/08/13/5 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |