{"schemaVersion":3,"id":"CVE-2026-47692","aliases":[],"status":"published","duplicateOf":null,"title":"Envoy: PROXY Protocol v2 header generator emits \"skipped\" TLVs, causing 65 KB attacker-controlled spillover into the upstream application stream","description":"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, PROXY Protocol v2 header generator emits TLVs beyond the maximum length of 65535 bytes, causing a mismatch between bytes written and the length field in the header. This can result in smuggled bytes on the upstream request. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 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