{"id":"CVE-2024-23324","state":"PUBLISHED","title":"Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata","description":"Envoy is a high-performance edge/middle/service proxy. External authentication can be bypassed by downstream connections. Downstream clients can force invalid gRPC requests to be sent to ext_authz, circumventing ext_authz checks when failure_mode_allow is set to true. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.\n","publishedAt":"2024-02-09T22:48:26.889Z","updatedAt":"2024-08-19T16:12:49.967Z","severity":{"score":8.6,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["envoyproxy envoy"],"affected":[{"vendor":"envoyproxy","product":"envoy","versions":[{"version":">= 1.29.0, < 1.29.1","status":"affected"},{"version":">= 1.28.0, < 1.28.1","status":"affected"},{"version":">= 1.27.0, < 1.27.3","status":"affected"},{"version":"< 1.26.7","status":"affected"}]}],"references":["https://github.com/envoyproxy/envoy/security/advisories/GHSA-gq3v-vvhj-96j6","https://github.com/envoyproxy/envoy/commit/29989f6cc8bfd8cd2ffcb7c42711eb02c7a5168a"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T20:06:59.846Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/23xxx/CVE-2024-23324.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-23324","state":"PUBLISHED","datePublished":"2024-02-09T22:48:26.889Z","dateUpdated":"2024-08-19T16:12:49.967Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2024-01-15T15:19:19.439Z"},"containers":{"cna":{"title":"Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata","descriptions":[{"lang":"en","value":"Envoy is a high-performance edge/middle/service proxy. 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