Medium severity5.3NVD Advisory· Published Jul 31, 2026· Updated Aug 13, 2026
CVE-2026-64607
CVE-2026-64607
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.apache.httpcomponents.client5:httpclient5Maven | >= 5.0-alpha1, < 5.6.3 | 5.6.3 |
Affected products
162- Range: 5.0-alpha1 - 5.6.2
- osv-coords160 versionspkg:apk/chainguard/airbyte-platform-bootloaderpkg:apk/chainguard/airbyte-platform-cronpkg:apk/chainguard/airbyte-platform-fips-bootloaderpkg:apk/chainguard/airbyte-platform-fips-cronpkg:apk/chainguard/airbyte-platform-fips-serverpkg:apk/chainguard/airbyte-platform-fips-workerspkg:apk/chainguard/airbyte-platform-fips-workload-api-serverpkg:apk/chainguard/airbyte-platform-fips-workload-launcherpkg:apk/chainguard/airbyte-platform-serverpkg:apk/chainguard/airbyte-platform-workerspkg:apk/chainguard/airbyte-platform-workload-api-serverpkg:apk/chainguard/airbyte-platform-workload-launcherpkg:apk/chainguard/akhqpkg:apk/chainguard/apache-hoppkg:apk/chainguard/apache-hop-fipspkg:apk/chainguard/apache-nifi-2.11pkg:apk/chainguard/apache-nifi-registry-2.11pkg:apk/chainguard/apache-polarispkg:apk/chainguard/apache-polaris-fipspkg:apk/chainguard/apicurio-registrypkg:apk/chainguard/apicurio-registry-fipspkg:apk/chainguard/camunda-8.8pkg:apk/chainguard/camunda-zeebe-8.6pkg:apk/chainguard/camunda-zeebe-8.7pkg:apk/chainguard/camunda-zeebe-8.8pkg:apk/chainguard/cassandra-reaperpkg:apk/chainguard/cloudwatch-exporterpkg:apk/chainguard/commercial-elasticsearch-9.4pkg:apk/chainguard/conductorpkg:apk/chainguard/conductor-fipspkg:apk/chainguard/dependency-trackpkg:apk/chainguard/dependency-track-apiserver-4pkg:apk/chainguard/dependency-track-apiserver-5pkg:apk/chainguard/dependency-track-bundledpkg:apk/chainguard/druidpkg:apk/chainguard/elasticsearch-9.2-iamguardedpkg:apk/chainguard/elasticsearch-9.3pkg:apk/chainguard/elasticsearch-9.3-iamguardedpkg:apk/chainguard/elasticsearch-9.3-iamguarded-fipspkg:apk/chainguard/elasticsearch-9.4pkg:apk/chainguard/elasticsearch-9.4-iamguardedpkg:apk/chainguard/elasticsearch-9.4-iamguarded-fipspkg:apk/chainguard/elasticsearch-9.5pkg:apk/chainguard/elasticsearch-9.5-iamguardedpkg:apk/chainguard/elasticsearch-9.5-iamguarded-fipspkg:apk/chainguard/elasticsearch-fips-9.3pkg:apk/chainguard/elasticsearch-fips-9.4pkg:apk/chainguard/elasticsearch-fips-9.5pkg:apk/chainguard/flocipkg:apk/chainguard/floci-azpkg:apk/chainguard/geoserver-3.0pkg:apk/chainguard/hadoop-fips-3.5pkg:apk/chainguard/jbangpkg:apk/chainguard/kayenta-2026.0pkg:apk/chainguard/kayenta-2026.1pkg:apk/chainguard/kayenta-fips-2026.0pkg:apk/chainguard/kayenta-fips-2026.1pkg:apk/chainguard/kserve-modelmeshpkg:apk/chainguard/logstash-8.19pkg:apk/chainguard/logstash-8.19-iamguarded-compatpkg:apk/chainguard/logstash-8.19-with-output-opensearchpkg:apk/chainguard/logstash-9.4pkg:apk/chainguard/logstash-9.4-iamguarded-compatpkg:apk/chainguard/logstash-9.5pkg:apk/chainguard/logstash-9.5-iamguarded-compatpkg:apk/chainguard/logstash-fips-9.4pkg:apk/chainguard/logstash-fips-9.4-iamguarded-compatpkg:apk/chainguard/logstash-fips-9.5pkg:apk/chainguard/logstash-fips-9.5-iamguarded-compatpkg:apk/chainguard/metabasepkg:apk/chainguard/nacospkg:apk/chainguard/nacos-dockerpkg:apk/chainguard/nrjmxpkg:apk/chainguard/nuxeo-2023pkg:apk/chainguard/opensearch-2-ml-commonspkg:apk/chainguard/opensearch-3pkg:apk/chainguard/opensearch-3-alertingpkg:apk/chainguard/opensearch-3-anomaly-detectionpkg:apk/chainguard/opensearch-3-cross-cluster-replicationpkg:apk/chainguard/opensearch-3-k-nnpkg:apk/chainguard/opensearch-3-ml-commonspkg:apk/chainguard/opensearch-3-notificationspkg:apk/chainguard/opensearch-3-securitypkg:apk/chainguard/opensearch-3-sqlpkg:apk/chainguard/opensearch-fips-3pkg:apk/chainguard/opensearch-fips-3-alertingpkg:apk/chainguard/opensearch-fips-3-anomaly-detectionpkg:apk/chainguard/opensearch-fips-3-cross-cluster-replicationpkg:apk/chainguard/opensearch-fips-3-index-managementpkg:apk/chainguard/opensearch-fips-3-k-nnpkg:apk/chainguard/opensearch-fips-3-ml-commonspkg:apk/chainguard/opensearch-fips-3-notificationspkg:apk/chainguard/opensearch-fips-3-securitypkg:apk/chainguard/opensearch-fips-3-sqlpkg:apk/chainguard/pinotpkg:apk/chainguard/pinot-fipspkg:apk/chainguard/reposilitepkg:apk/chainguard/s3proxypkg:apk/chainguard/s3proxy-fipspkg:apk/chainguard/thingsboard-tb-mqtt-transportpkg:apk/chainguard/thingsboard-tb-nodepkg:apk/chainguard/traccarpkg:apk/chainguard/traccar-fipspkg:apk/chainguard/trino-plugin-delta-lakepkg:apk/chainguard/trino-plugin-druidpkg:apk/chainguard/trino-plugin-elasticsearchpkg:apk/chainguard/trino-plugin-exchange-filesystempkg:apk/chainguard/trino-plugin-exchange-hdfspkg:apk/chainguard/trino-plugin-hivepkg:apk/chainguard/trino-plugin-hudipkg:apk/chainguard/trino-plugin-icebergpkg:apk/chainguard/trino-plugin-kafkapkg:apk/chainguard/trino-plugin-lakehousepkg:apk/chainguard/trino-plugin-openlineagepkg:apk/chainguard/trino-plugin-opensearchpkg:apk/chainguard/trino-plugin-pinotpkg:apk/chainguard/trino-plugin-redshiftpkg:apk/chainguard/trino-plugin-spooling-filesystempkg:apk/chainguard/wavefront-proxypkg:apk/chainguard/wazuh-indexer-plugin-ml-commonspkg:apk/chainguard/wso2ispkg:apk/wolfi/akhqpkg:apk/wolfi/apicurio-registrypkg:apk/wolfi/cassandra-reaperpkg:apk/wolfi/cloudwatch-exporterpkg:apk/wolfi/dependency-trackpkg:apk/wolfi/dependency-track-bundledpkg:apk/wolfi/druidpkg:apk/wolfi/kserve-modelmeshpkg:apk/wolfi/logstash-9.4pkg:apk/wolfi/logstash-9.4-iamguarded-compatpkg:apk/wolfi/nrjmxpkg:apk/wolfi/opensearch-3pkg:apk/wolfi/opensearch-3-alertingpkg:apk/wolfi/opensearch-3-anomaly-detectionpkg:apk/wolfi/opensearch-3-cross-cluster-replicationpkg:apk/wolfi/opensearch-3-k-nnpkg:apk/wolfi/opensearch-3-ml-commonspkg:apk/wolfi/opensearch-3-notificationspkg:apk/wolfi/opensearch-3-securitypkg:apk/wolfi/opensearch-3-sqlpkg:apk/wolfi/thingsboard-tb-mqtt-transportpkg:apk/wolfi/thingsboard-tb-nodepkg:apk/wolfi/trino-plugin-delta-lakepkg:apk/wolfi/trino-plugin-druidpkg:apk/wolfi/trino-plugin-elasticsearchpkg:apk/wolfi/trino-plugin-exchange-filesystempkg:apk/wolfi/trino-plugin-exchange-hdfspkg:apk/wolfi/trino-plugin-hivepkg:apk/wolfi/trino-plugin-hudipkg:apk/wolfi/trino-plugin-icebergpkg:apk/wolfi/trino-plugin-kafkapkg:apk/wolfi/trino-plugin-lakehousepkg:apk/wolfi/trino-plugin-openlineagepkg:apk/wolfi/trino-plugin-opensearchpkg:apk/wolfi/trino-plugin-pinotpkg:apk/wolfi/trino-plugin-redshiftpkg:apk/wolfi/trino-plugin-spooling-filesystempkg:apk/wolfi/wavefront-proxypkg:rpm/opensuse/httpcomponents-client&distro=openSUSE%20Tumbleweed
< 2.0.0-r7+ 159 more
- (no CPE)range: < 2.0.0-r7
- (no CPE)range: < 2.0.0-r7
- (no CPE)range: < 2.0.0-r6
- (no CPE)range: < 2.0.0-r6
- (no CPE)range: < 2.0.0-r6
- (no CPE)range: < 2.0.0-r6
- (no CPE)range: < 2.0.0-r6
- (no CPE)range: < 2.0.0-r6
- (no CPE)range: < 2.0.0-r7
- (no CPE)range: < 2.0.0-r7
- (no CPE)range: < 2.0.0-r7
- (no CPE)range: < 2.0.0-r7
- (no CPE)range: < 0.28.0-r5
- (no CPE)range: < 2.19.0-r0
- (no CPE)range: < 2.19.0-r0
- (no CPE)range: < 2.11.0-r5
- (no CPE)range: < 2.11.0-r2
- (no CPE)range: < 1.7.0-r1
- (no CPE)range: < 1.7.0-r1
- (no CPE)range: < 3.3.1-r6
- (no CPE)range: < 3.3.1-r5
- (no CPE)range: < 8.8.35-r1
- (no CPE)range: < 8.6.39-r9
- (no CPE)range: < 8.7.37-r1
- (no CPE)range: < 8.8.35-r1
- (no CPE)range: < 5.0.0-r8
- (no CPE)range: < 0.18.0-r4
- (no CPE)range: < 9.4.6-r0
- (no CPE)range: < 3.32.1-r5
- (no CPE)range: < 3.32.1-r4
- (no CPE)range: < 4.14.3-r2
- (no CPE)range: < 4.14.3-r5
- (no CPE)range: < 5.0.4-r3
- (no CPE)range: < 4.14.3-r2
- (no CPE)range: < 37.0.0-r51
- (no CPE)range: < 9.2.8-r13
- (no CPE)range: < 9.3.8-r4
- (no CPE)range: < 9.3.8-r4
- (no CPE)range: < 9.3.7-r7
- (no CPE)range: < 9.4.5-r1
- (no CPE)range: < 9.4.5-r1
- (no CPE)range: < 9.4.5-r4
- (no CPE)range: < 9.5.2-r2
- (no CPE)range: < 9.5.2-r2
- (no CPE)range: < 9.5.2-r1
- (no CPE)range: < 9.3.7-r7
- (no CPE)range: < 9.4.5-r4
- (no CPE)range: < 9.5.2-r1
- (no CPE)range: < 1.6.0-r3
- (no CPE)range: < 0.10.0-r3
- (no CPE)range: < 3.0.1-r2
- (no CPE)range: < 3.5.0-r3
- (no CPE)range: < 0.141.0-r4
- (no CPE)range: < 2026.0.7-r2
- (no CPE)range: < 2026.1.2-r3
- (no CPE)range: < 2026.0.5-r1
- (no CPE)range: < 2026.1.2-r3
- (no CPE)range: < 0.12.0-r39
- (no CPE)range: < 8.19.20-r4
- (no CPE)range: < 8.19.20-r4
- (no CPE)range: < 8.19.20-r4
- (no CPE)range: < 9.4.5-r3
- (no CPE)range: < 9.4.5-r3
- (no CPE)range: < 9.5.2-r3
- (no CPE)range: < 9.5.2-r3
- (no CPE)range: < 9.4.5-r3
- (no CPE)range: < 9.4.5-r3
- (no CPE)range: < 9.5.2-r4
- (no CPE)range: < 9.5.2-r4
- (no CPE)range: < 0.63.15-r1
- (no CPE)range: < 3.2.3-r8
- (no CPE)range: < 3.2.3-r5
- (no CPE)range: < 2.13.0-r3
- (no CPE)range: < 2023.45-r8
- (no CPE)range: < 2.19.6-r7
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.8.0-r1
- (no CPE)range: < 3.8.0-r1
- (no CPE)range: < 3.8.0-r1
- (no CPE)range: < 3.8.0-r1
- (no CPE)range: < 3.8.0-r1
- (no CPE)range: < 3.8.0-r1
- (no CPE)range: < 3.8.0-r1
- (no CPE)range: < 3.8.0-r1
- (no CPE)range: < 3.8.0-r1
- (no CPE)range: < 3.8.0-r1
- (no CPE)range: < 1.5.1-r14
- (no CPE)range: < 1.5.1-r10
- (no CPE)range: < 3.6.2-r4
- (no CPE)range: < 4.0.0-r1
- (no CPE)range: < 4.0.0-r1
- (no CPE)range: < 4.3.1.3-r19
- (no CPE)range: < 4.3.1.3-r19
- (no CPE)range: < 6.14.5-r6
- (no CPE)range: < 6.14.5-r7
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 13.9-r30
- (no CPE)range: < 4.14.7-r4
- (no CPE)range: < 7.3.0-r3
- (no CPE)range: < 0.28.0-r5
- (no CPE)range: < 3.3.1-r6
- (no CPE)range: < 5.0.0-r8
- (no CPE)range: < 0.18.0-r4
- (no CPE)range: < 4.14.3-r2
- (no CPE)range: < 4.14.3-r2
- (no CPE)range: < 37.0.0-r51
- (no CPE)range: < 0.12.0-r39
- (no CPE)range: < 9.4.5-r3
- (no CPE)range: < 9.4.5-r3
- (no CPE)range: < 2.13.0-r3
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 3.7.0-r14
- (no CPE)range: < 4.3.1.3-r19
- (no CPE)range: < 4.3.1.3-r19
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 483-r5
- (no CPE)range: < 13.9-r30
- (no CPE)range: < 4.5.14-2.1
Patches
Vulnerability mechanics
References
8- github.com/advisories/GHSA-hjcp-jmpx-g3qmghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-64607ghsaADVISORY
- www.openwall.com/lists/oss-security/2026/08/13/5nvdWEB
- github.com/apache/httpcomponents-client/commit/55733f4121f7ba26ddf04fe12739d9c15962cb94ghsaWEB
- github.com/apache/httpcomponents-client/commit/ebac9512f555c4a355cad3f59ef2db69b597cc97ghsaWEB
- github.com/apache/httpcomponents-client/releases/tag/rel/v5.6.3ghsaWEB
- github.com/apache/httpcomponents-client/releases/tag/rel/v5.7-alpha1ghsaWEB
- lists.apache.org/thread/qqfzo3fqcdk4l5496vz95ppvl4ty511qnvdMailing ListRelease NotesWEB
News mentions
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