{"id":"CVE-2026-47207","summary":"Envoy crashes if multiple unexpected ext_proc responses are packed into one gRPC message","details":"Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.34.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, Envoy crashes if an ext_proc server sends a single gRPC message containing multiple, specially crafted ProcessingResponse messages. This can occur when the first response in the batch causes the gRPC stream object to be destroyed, leading to a use-after-free error when Envoy attempts to process subsequent responses in the same gRPC message. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.","aliases":["BIT-envoy-2026-47207","GHSA-68cv-hq5f-g6xv"],"modified":"2026-08-12T03:51:30.836537535Z","published":"2026-06-26T17:52:27.739Z","related":["openSUSE-SU-2026:11141-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-416"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47207.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47207.json"},{"type":"ADVISORY","url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-68cv-hq5f-g6xv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47207"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/envoyproxy/envoy","events":[{"introduced":"d7809ba2b07fd869d49bfb122b27f6a7977b4d94"},{"fixed":"adb998f2875986005be294d10231a9c9a497e30d"},{"introduced":"63ee0dc79dce88117c6bd2df5a742f8eb67ea980"},{"fixed":"57198c441a298a75097c690726d90974549a9778"},{"introduced":"6d9bb7d9a85d616b220d1f8fe67b61f82bbdb8d3"},{"fixed":"f97695a50e11f5ff6719e129a466bf9204b64a7f"},{"introduced":"f1dd21b16c244bda00edfb5ffce577e12d0d2ec2"},{"fixed":"0ebfcfe5b0484b89ca85b761da9e05ce75dbda8d"}],"database_specific":{"extracted_events":[{"introduced":"1.34.0"},{"fixed":"1.35.13"},{"introduced":"1.36.0"},{"fixed":"1.36.9"},{"introduced":"1.37.0"},{"fixed":"1.37.5"},{"introduced":"1.38.0"},{"fixed":"1.38.3"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*"}}],"versions":["v1.38.2","v1.37.4","v1.36.8","v1.35.12","v1.38.1","v1.37.3","v1.36.7","v1.35.11","v1.38.0","v1.37.2","v1.36.6","v1.35.10","v1.37.1","v1.36.5","v1.35.9","v1.37.0","v1.36.4","v1.35.8","v1.36.3","v1.35.7","v1.35.6","v1.36.2","v1.36.1","v1.35.5","v1.36.0","v1.35.4","v1.35.3","v1.35.2","v1.35.1","v1.35.0","v1.34.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47207.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}