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None severity0.0GHSA Advisory· Published May 19, 2026· Updated May 21, 2026

CVE-2026-33637

CVE-2026-33637

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
faradayRubyGems
>= 2.0.0, < 2.14.22.14.2

Affected products

46

Patches

Vulnerability mechanics

References

5

News mentions

0

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