CVE-2026-41999 Incorrect Behaviour of Views with TCP PROXY Requests

Incorrect Behaviour of Views with TCP PROXY Requests...

CVE-2026-41999

Incorrect Behaviour of Views with TCP PROXY Requests...

EUVD-2026-31262

Incorrect Behaviour of Views with TCP PROXY Requests...

CVE-2026-41999

Technical details are not publicly available in the provided documents. Monitor for updates.

Envoy forwards early CONNECT data in TCP proxy mode

Summary Forwarding of early CONNECT data in TCP proxy mode. Details Per RFC 7231-4.3.6 the sender of CONNECT and all inbound proxies switch to tunnel mode only after receiving 2xx response. However in TCP proxy mode, Envoy accepts client data before it has issued a 2xx response and eagerly proxie...

GHSA-RJ35-4M94-77JH Envoy forwards early CONNECT data in TCP proxy mode

Summary Forwarding of early CONNECT data in TCP proxy mode. Details Per RFC 7231-4.3.6 the sender of CONNECT and all inbound proxies switch to tunnel mode only after receiving 2xx response. However in TCP proxy mode, Envoy accepts client data before it has issued a 2xx response and eagerly proxie...

CVE-2025-64763

Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, when Envoy is configured in TCP proxy mode to handle CONNECT requests, it accepts client data before issuing a 2xx response and forwards that data to the upstream TCP connection. If a forwardi...

CVE-2025-64763 Envoy forwards early CONNECT data in TCP proxy mode

Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, when Envoy is configured in TCP proxy mode to handle CONNECT requests, it accepts client data before issuing a 2xx response and forwards that data to the upstream TCP connection. If a forwardi...

CVE-2025-64763 Envoy forwards early CONNECT data in TCP proxy mode

Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, when Envoy is configured in TCP proxy mode to handle CONNECT requests, it accepts client data before issuing a 2xx response and forwards that data to the upstream TCP connection. If a forwardi...

CVE-2025-64763

Envoy CVE-2025-64763 relates to a de-synchronization risk in TCP proxy mode where Envoy may accept client data for CONNECT requests before sending a 2xx response, and then forward that data to the upstream connection. If the upstream proxy returns a non‑2xx status, the CONNECT tunnel state can be...

Envoy 安全漏洞

Envoy is an Enphase open source gateway program for connecting smart home devices. A security vulnerability exists in Envoy versions 1.33.12, 1.34.10, 1.35.6, 1.36.2, and prior versions, which stems from a state desynchronization issue when processing CONNECT requests in TCP proxy mode...

EUVD-2019-10244

Malware in sbrugna...

EUVD-2020-23142

Malware in sbrugna...

EUVD-2013-5845

Malware in sbrugna...

EUVD-2022-25996

Malicious code in bioql PyPI...

UBUNTU-CVE-2021-47152

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix data stream corruption Maxim reported several issues when forcing a TCP transparent proxy to use the MPTCP protocol for the inbound connections. He also provided a clean reproducer. The problem boils down to...

BIT-ENVOY-2020-35470

Envoy before 1.16.1 logs an incorrect downstream address because it considers only the directly connected peer, not the information in the proxy protocol header. This affects situations with tcp-proxy as the network filter not HTTP filters...

GHSA-2XHQ-GV6C-P224 Etcd Gateway can include itself as an endpoint resulting in resource exhaustion

Vulnerability type Denial of Service Detail The etcd gateway is a simple TCP proxy to allow for basic service discovery and access. However, it is possible to include the gateway address as an endpoint. This results in a denial of service, since the endpoint can become stuck in a loop of requesti...

Etcd Gateway can include itself as an endpoint resulting in resource exhaustion

Vulnerability type Denial of Service Detail The etcd gateway is a simple TCP proxy to allow for basic service discovery and access. However, it is possible to include the gateway address as an endpoint. This results in a denial of service, since the endpoint can become stuck in a loop of requesti...

Missing Release of Resource after Effective Lifetime

In etcd before versions 3.3.23 and 3.4.10, the etcd gateway is a simple TCP proxy to allow for basic service discovery and access. However, it is possible to include the gateway address as an endpoint. This results in a denial of service, since the endpoint can become stuck in a loop of requestin...