https-proxy-agent prior to 2.2.3 are vulnerable to Machine-In-The-Middle. The package fails to enforce TLS on the socket if the proxy server responds the to the request with a HTTP status different than 200. This allows an attacker with access to the proxy server to intercept unencrypted communications, which may include sensitive information such as credentials.
Upgrade to version 3.0.0 or 2.2.3.
publishedAdvisory PublishedOct 18th, 2019
reportedReported by Kris AdlerSep 26th, 2019