EUVD-2026-39455

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read...

Linux Distros Unpatched Vulnerability : CVE-2026-9697

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Impact: undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI socks5:// or socks://. The target HTTPS connection...

NPM: undici vulnerable to cross-origin request routing via SOCKS5 proxy pool reuse

NPM: undici vulnerable to cross-origin request routing via SOCKS5 proxy pool reuse vulnerability discovered by ? in WordPress Npm undici versions = 7.23.0, 7.28.0...

undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent

Impact undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI socks5:// or socks://. The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servername...

EUVD-2026-37763

undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent...

NPM: undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent

NPM: undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent vulnerability discovered by ? in WordPress Npm undici versions = 7.23.0, 7.28.0...

GHSA-VMH5-MC38-953G undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent

Impact undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI socks5:// or socks://. The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servername...

CVE-2026-9697

A flaw was found in undici. When undici's ProxyAgent is configured with a SOCKS5 proxy Uniform Resource Identifier URI, it silently ignores Transport Layer Security TLS options, such as custom Certificate Authorities CAs. This allows a remote attacker to perform a Man-in-the-Middle MITM attack,...

Improper Certificate Validation

Overview org.webjars.npm:undici is an An HTTP/1.1 client, written from scratch for Node.js Affected versions of this package are vulnerable to Improper Certificate Validation in the ProxyAgent when configured with a SOCKS5 proxy URI, which causes the requestTls option to be silently dropped. An...

Improper Certificate Validation

Overview undici is an An HTTP/1.1 client, written from scratch for Node.js Affected versions of this package are vulnerable to Improper Certificate Validation in the ProxyAgent when configured with a SOCKS5 proxy URI, which causes the requestTls option to be silently dropped. An attacker can...

CVE-2026-9697

Impact: undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI socks5:// or socks://. The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servernam...

CVE-2026-9697

undici’s ProxyAgent drops the requestTls option when used with a SOCKS5 proxy (socks5:// or socks://), causing the HTTPS connection to rely on Node’s default trust store and ignore user-provided ca, cert, key, rejectUnauthorized, and servername. This allows any cert signed by a publicly trusted C...

CVE-2026-9697 undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent

Impact: undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI socks5:// or socks://. The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servernam...

CVE-2026-9697 undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent

Impact: undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI socks5:// or socks://. The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servernam...

CVE-2026-9697 undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent

Impact: undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI socks5:// or socks://. The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servernam...

CVE-2026-6734 undici vulnerable to cross-origin request routing via SOCKS5 proxy pool reuse

Impact: When using Socks5ProxyAgent, undici reuses a single connection pool across different origins without verifying that the pool's origin matches the requested origin. All requests are dispatched through the pool connected to the first origin, regardless of the intended destination. This caus...

CVE-2026-6734

Summary of CVE-2026-6734 : A vulnerability in undici’s Socks5ProxyAgent causes cross-origin request routing by reusing a single connection pool across multiple origins without verifying the pool origin. As a result, requests for origin B can be dispatched through the pool for origin A; credential...

Important: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: python-urllib3: python3-urllib3+brotli-2.7.0-3.hum1 noarch python3-urllib3+h2-2.7.0-3.hum1 noarch python3-urllib3+socks-2.7.0-3.hum1 noarch python3-urllib3+zstd-2.7.0-3.hum1 noarch...

undici: undici: Man-in-the-Middle attack via ignored TLS options with SOCKS5 proxy

A flaw was found in undici. When undici's ProxyAgent is configured with a SOCKS5 proxy Uniform Resource Identifier URI, it silently ignores Transport Layer Security TLS options, such as custom Certificate Authorities CAs. This allows a remote attacker to perform a Man-in-the-Middle MITM attack,...

undici: undici: Man-in-the-Middle attack via ignored TLS options with SOCKS5 proxy

A flaw was found in undici. When undici's ProxyAgent is configured with a SOCKS5 proxy Uniform Resource Identifier URI, it silently ignores Transport Layer Security TLS options, such as custom Certificate Authorities CAs. This allows a remote attacker to perform a Man-in-the-Middle MITM attack,...