CVE-2026-47692

published 2026-06-26

CVE-2026-47692: 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…

Priority P4 21 medium 4.3 CVSS 3.1

AV A AC L PR N UI N S U C N I L A N

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 1.38.3.

Affected

8 ranges

Vendor	Product	Version range	Fixed in
envoyproxy	envoy	—	—
envoyproxy	envoy	—	—
envoyproxy	envoy	—	—
envoyproxy	envoy	—	—
envoyproxy	envoy	>= 1.34.0 < 1.35.13	1.35.13
envoyproxy	envoy	>= 1.36.0 < 1.36.9	1.36.9
envoyproxy	envoy	>= 1.37.0 < 1.37.5	1.37.5
envoyproxy	envoy	>= 1.38.0 < 1.38.3	1.38.3

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CWE-130