Is CVE-2026-33637 actively exploited?

No active exploitation of CVE-2026-33637 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33637 be exploited remotely?

Yes. CVE-2026-33637 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33637?

CVE-2026-33637 has a CVSS score of 6.5 (MEDIUM).

HOME VULNERABILITIESCVE-2026-33637

MEDIUM

CVE-2026-33637

CWE-918Published: May 19, 2026· Updated: May 21, 2026

6.5

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.3th

Official 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.

NVD Source

Technical Analysis

CVE-2026-33637 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.