{"id":"CVE-2026-50572","title":"Envoy is an open source edge and service proxy designed for cloud-native applications","summary":"Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's HTTP external-authorization client can retain a stale request callback after a request is reject…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-416"],"vendor":"envoyproxy","product":"envoy","affected":["envoy < 1.36.10","envoy >= 1.37.0, < 1.37.6","envoy >= 1.38.0, < 1.38.4","envoy >= 1.39.0, < 1.39.1"],"patched":["openshift_service_mesh 3.0","openshift_service_mesh 3.1","openshift_service_mesh 3.2","openshift_service_mesh 3.3","openshift_service_mesh 3.4"],"published":"2026-09-21","updated":"2026-09-23","sourceUpdated":"2026-09-23T18:43:37.403","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-50572","references":[{"url":"https://github.com/envoyproxy/envoy/commit/8dacef38337aeffd62866b5c5910104b63b33db8","label":"security-advisories@github.com"},{"url":"https://github.com/envoyproxy/envoy/commit/a49085623654e27e9ad6298928557644b849d7ce","label":"security-advisories@github.com"},{"url":"https://github.com/envoyproxy/envoy/commit/c1b29534a294cb0999e99e1fe0de000310165f03","label":"security-advisories@github.com"},{"url":"https://github.com/envoyproxy/envoy/commit/c524571ffad517ba650d9563f85afa89194e2cfb","label":"security-advisories@github.com"},{"url":"https://github.com/envoyproxy/envoy/releases/tag/v1.36.10","label":"security-advisories@github.com"},{"url":"https://github.com/envoyproxy/envoy/releases/tag/v1.37.6","label":"security-advisories@github.com"},{"url":"https://github.com/envoyproxy/envoy/releases/tag/v1.38.4","label":"security-advisories@github.com"},{"url":"https://github.com/envoyproxy/envoy/releases/tag/v1.39.1","label":"security-advisories@github.com"},{"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-q8wp-gf7q-m8cv","label":"security-advisories@github.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50572.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-50572"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2512091"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-50572"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50572"},{"url":"https://access.redhat.com/errata/RHSA-2026:65106"},{"url":"https://access.redhat.com/errata/RHSA-2026:65112"},{"url":"https://access.redhat.com/errata/RHSA-2026:65113"},{"url":"https://access.redhat.com/errata/RHSA-2026:65115"},{"url":"https://access.redhat.com/errata/RHSA-2026:65121"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.0068,"epssPercentile":0.50269,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-22T13:30:30.535577Z"},"ingestedAt":"2026-09-21T19:51:58.874Z","slug":"CVE-2026-50572","body":"## Overview\n\nEnvoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's HTTP external-authorization client can retain a stale request callback after a request is rejected. When RawHttpClientImpl::onSuccess later processes the authorization response, it can invoke callbacks_ after the callback owner has been destroyed, causing a use-after-free and process crash under production traffic. The relevant scope boundary is that the vulnerable path uses the HTTP ext_authz client; the advisory does not establish the same trigger for unrelated filters. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:65106** · Red Hat · fixed in: Red Hat OpenShift Service Mesh 3.0 · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:65106)\n- **RHSA-2026:65112** · Red Hat · fixed in: Red Hat OpenShift Service Mesh 3.1 · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:65112)\n- **RHSA-2026:65113** · Red Hat · fixed in: Red Hat OpenShift Service Mesh 3.2 · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:65113)\n- **RHSA-2026:65115** · Red Hat · fixed in: Red Hat OpenShift Service Mesh 3.3 · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:65115)\n- **RHSA-2026:65121** · Red Hat · fixed in: Red Hat OpenShift Service Mesh 3.4 · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:65121)","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}