CVE-2018-3739: HTTPS-Proxy-Agent Project HTTPS-Proxy-Agent

Critical severity, CVSS 9.1. EPSS: 2% chance of exploitation in the next 30 days.

https-proxy-agent before 2.1.1 passes auth option to the Buffer constructor without proper sanitization, resulting in DoS and uninitialized memory leak in setups where an attacker could submit typed input to the 'auth' parameter (e.g. JSON).

Affected products

• HTTPS-Proxy-Agent Project HTTPS-Proxy-Agent: before 2.2.0 (fixed in 2.2.0)

Published 2018-06-07. Last modified 2026-06-17.