{"id":"RHLW-2026-2a7b95611000d6b5","summary":"Lightwell Security Advisory: httpclient5 5.6.0.rhlw-00001","details":"Red Hat Lightwell has released org.apache.httpcomponents.client5:httpclient5 5.6.0.rhlw-00001 with backported fixes for CVE-2026-40542 and CVE-2026-64607.\n\nCVE-2026-40542: Apache HttpClient: SCRAM-SHA-256 mutual authentication bypass may cause the client to accept authentication without proper mutual authentication verification\n\nCVE-2026-64607: Apache HttpComponents Client: Connection Leak on Content-Encoding Decode Error Leads to Pool Exhaustion DoS\n\nThis patched artifact is a drop-in replacement for org.apache.httpcomponents.client5:httpclient5 5.6.0 from Maven Central.","modified":"2026-10-22T00:08:22.625855738Z","published":"2026-10-12T16:58:44Z","upstream":["CVE-2026-40542","CVE-2026-64607","GHSA-hjcp-jmpx-g3qm","GHSA-v468-qcjx-r72w"],"references":[{"type":"WEB","url":"https://repo.maven.apache.org/maven2"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40542.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:60239"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:60246"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:60247"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:60248"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:60249"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:60250"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:60251"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:60252"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:60254"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:60256"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:60259"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-40542"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40542.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/tfmgv86xr0z1y096vs3z0y315t1v3o97"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40542"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-v468-qcjx-r72w"},{"type":"WEB","url":"https://repo.maven.apache.org/maven2/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64607.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/qqfzo3fqcdk4l5496vz95ppvl4ty511q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64607"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-hjcp-jmpx-g3qm"}],"affected":[{"package":{"name":"org.apache.httpcomponents.client5:httpclient5","ecosystem":"Red Hat Lightwell:Maven","purl":"pkg:maven/org.apache.httpcomponents.client5/httpclient5"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.6.0.rhlw-00001"}]}],"versions":["5.0","5.0-alpha1","5.0-alpha2","5.0-alpha3","5.0-beta1","5.0-beta2","5.0-beta3","5.0-beta4","5.0-beta5","5.0-beta6","5.0-beta7","5.0.1","5.0.2","5.0.3","5.0.4","5.1","5.1-beta1","5.1.1","5.1.2","5.1.3","5.1.4","5.2","5.2-alpha1","5.2-beta1","5.2.1","5.2.2","5.2.3","5.3","5.3-alpha1","5.3.1","5.4","5.4-alpha1","5.4-alpha2","5.4-beta1","5.4.1","5.4.2","5.4.3","5.4.4","5.5","5.5-alpha1","5.5.1","5.5.2","5.6","5.6-alpha1","5.6.0"],"database_specific":{"lightwell":{"backport_base_version":"5.6.0","remediated_version":"5.6.0.rhlw-00001","repository_url":"https://packages.redhat.com/lightwell/java/remediated/"},"source":"https://github.com/project-lightwell/lightwell-osv/blob/main/advisories/RHLW-2026-2a7b95611000d6b5.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}],"credits":[{"name":"Red Hat Lightwell","type":"REMEDIATION_DEVELOPER"}]}