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Envoy Proxy Improper Handling of Length Parameter Inconsistency Vulnerability - CVE-2026-47692 - Vulnerability Database
Envoy Proxy

Envoy Proxy Improper Handling of Length Parameter Inconsistency Vulnerability - CVE-2026-47692

Medium
Reference: CVE-2026-47692
NVD Link: https://nvd.nist.gov/vuln/detail/CVE-2026-47692
Title: Envoy Proxy Improper Handling of Length Parameter Inconsistency Vulnerability
Overview:

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.