Maven/org.apache.httpcomponents.client5:httpclient5 CVE-2026-64607: medium 5.3

Apache HttpComponents Client: Connection Leak on Content-Encoding Decode Error Leads to Pool Exhaustion DoS

Action: Upgrade org.apache.httpcomponents.client5:httpclient5 to 5.6.3 or later.

Affected

Fixed versions

Sources

• osv: GHSA-hjcp-jmpx-g3qm
• https://nvd.nist.gov/vuln/detail/CVE-2026-64607
• https://github.com/apache/httpcomponents-client/commit/55733f4121f7ba26ddf04fe12739d9c15962cb94
• https://github.com/apache/httpcomponents-client/commit/ebac9512f555c4a355cad3f59ef2db69b597cc97
• https://github.com/apache/httpcomponents-client
• https://github.com/apache/httpcomponents-client/releases/tag/rel/v5.6.3
• https://github.com/apache/httpcomponents-client/releases/tag/rel/v5.7-alpha1
• https://lists.apache.org/thread/qqfzo3fqcdk4l5496vz95ppvl4ty511q
• http://www.openwall.com/lists/oss-security/2026/08/13/5

CVE-2026-64607 · published 2026-07-31T12:30:30Z · modified 2026-09-10T03:50:12.358752934Z · JSON