Description
Faraday is an HTTP client library abstraction layer that provides a common interface over many adapters. Versions 2.0.0 through 2.14.1 still allow protocol-relative host override when the request target is passed as a URI object (rather than a String) to Faraday::Connection#build_exclusive_url. This bypasses the February 2026 fix for GHSA-33mh-2634-fwr2 and enables off-host request forgery: a request built from a fixed-base Faraday::Connection can be redirected to an attacker-controlled host, forwarding connection-scoped values such as Authorization headers and default query parameters. This issue has been fixed in version 2.14.3.
Problem types
CWE-918: Server-Side Request Forgery (SSRF)
Product status
References
github.com/...araday/security/advisories/GHSA-5rv5-xj5j-3484
github.com/...araday/security/advisories/GHSA-5rv5-xj5j-3484
github.com/advisories/GHSA-33mh-2634-fwr2