{"id":"CVE-2026-93564","aliases":[],"cve":{"records":[{"id":"CVE-2026-93564","source":"redhat","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-18T09:58:47.232Z","published":"2026-09-18T14:13:32.128Z","modified":"2026-11-06T17:12:17.265Z"}],"publishers":[{"name":"redhat","role":"CNA","organizationId":"53f830b8-0a3f-465b-8143-3b8a9948e749","modified":"2026-11-06T17:12:17.265Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-09-18T17:42:41.325Z"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:69440","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:69470","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:70257","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:83612","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:95759","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:95760","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:95761","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:95762","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/security/cve/CVE-2026-93564","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536953","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat"}],"weaknesses":[{"id":"CWE-1035","description":"CWE-1035","source":"redhat"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-09-18T17:42:29.142695Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Io.netty/netty-codec-haproxy: netty: haproxy proxy-v2 nested-tlv grandchild bytebuf reference-count leak (incomplete fix of pr #16881)","titleSource":"redhat","descriptionSource":"redhat","description":"A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service (DoS) for the affected system.","score":7.5,"severity":"high","published":"2026-09-18T14:13:32.128Z","modified":"2026-11-06T17:12:17.265Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Red Hat","name":"Red Hat Build of Apache Camel 3.33.3.SP2","platforms":[],"versions":[{"version":"4.1.138.Final-redhat-00001","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:apache_camel_quarkus:3.33"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat Build of Debezium 3.6","platforms":[],"versions":[],"defaultStatus":"unaffected","cpes":["cpe:/a:redhat:debezium:3.6"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Keycloak 26.4","platforms":[],"versions":[{"version":"26.4.17-2","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:build_keycloak:26.4::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Keycloak 26.4","platforms":[],"versions":[{"version":"26.4-29","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:build_keycloak:26.4::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Keycloak 26.4","platforms":[],"versions":[{"version":"26.4-30","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:build_keycloak:26.4::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Keycloak 26.4.17","platforms":[],"versions":[],"defaultStatus":"unaffected","cpes":["cpe:/a:redhat:build_keycloak:26.4::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Keycloak 26.6","platforms":[],"versions":[{"version":"26.6.8-2","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:build_keycloak:26.6::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Keycloak 26.6","platforms":[],"versions":[{"version":"26.6-24","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:build_keycloak:26.6::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Keycloak 26.6","platforms":[],"versions":[{"version":"26.6-24","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:build_keycloak:26.6::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Keycloak 26.6.8","platforms":[],"versions":[],"defaultStatus":"unaffected","cpes":["cpe:/a:redhat:build_keycloak:26.6::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Quarkus 3.27.5.SP2","platforms":[],"versions":[],"defaultStatus":"unaffected","cpes":["cpe:/a:redhat:quarkus:3.27::el8"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Quarkus 3.33.3.SP2","platforms":[],"versions":[],"defaultStatus":"unaffected","cpes":["cpe:/a:redhat:quarkus:3.33::el8"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat AMQ Broker 7","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:amq_broker:7"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Apache Camel 4 for Quarkus 3","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:camel_quarkus:3"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Apache Camel for Spring Boot 4","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:camel_spring_boot:4"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat build of Apicurio Registry 3","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:apicurio_registry:3"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat Fuse 7","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:jboss_fuse:7"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat JBoss Enterprise Application Platform 7","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:7"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"},{"vendor":"Red Hat","name":"Red Hat Single Sign-On 7","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:red_hat_single_sign_on:7"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"}],"remediation":[{"text":"See https://github.com/netty/netty/security/advisories/GHSA-j58c-g352-8h4p for fixed versions and remediation guidance.","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"}],"references":["https://access.redhat.com/errata/RHSA-2026:69440","https://access.redhat.com/errata/RHSA-2026:69470","https://access.redhat.com/errata/RHSA-2026:70257","https://access.redhat.com/errata/RHSA-2026:83612","https://access.redhat.com/errata/RHSA-2026:95759","https://access.redhat.com/errata/RHSA-2026:95760","https://access.redhat.com/errata/RHSA-2026:95761","https://access.redhat.com/errata/RHSA-2026:95762","https://access.redhat.com/security/cve/CVE-2026-93564","https://bugzilla.redhat.com/show_bug.cgi?id=2536953"],"sources":[{"name":"CVE","id":"CVE-2026-93564","modified":"2026-11-06T17:12:17.265Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5}],"sourceAffected":[],"observedAt":"2026-11-06T18:03:29.380Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T00:10:33.488Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-06T14:55:34.007Z","attemptedAt":"2026-11-06T14:55:34.007Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-06T14:55:34.011Z","attemptedAt":"2026-11-06T14:55:34.011Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-06T14:55:34.011Z","attemptedAt":"2026-11-06T14:55:34.011Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-06T14:55:34.011Z","attemptedAt":"2026-11-06T14:55:34.011Z"}],"evidence":[{"source":"NVD","id":"CVE-2026-93564","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93564","modified":"2026-11-06T11:17:19.307","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-11-06T14:55:34.007Z"},{"source":"ENISA EUVD","id":"EUVD-2026-82930","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-82930","modified":"Nov 6, 2026, 10:23:33 AM","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-11-06T14:55:34.011Z"},{"source":"FIRST EPSS","id":"CVE-2026-93564","url":"https://www.first.org/epss/","probability":0.00939,"percentile":0.61072,"date":"2026-11-06","checkedAt":"2026-11-06T14:55:34.011Z"},{"source":"GitHub Advisory Database","id":"GHSA-74qm-9qc5-ff4g","url":"https://github.com/advisories/GHSA-74qm-9qc5-ff4g","modified":"2026-11-06T12:31:30Z","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-11-06T14:55:34.011Z"}],"aiSummary":{"text":"A reference-count leak in Netty's HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted headers, potentially leading to memory exhaustion and a Denial of Service (DoS). The affected product is Io.netty/netty-codec-haproxy. The exact affected versions are not specified.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-06T18:41:46.705Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-93564"}]}}