CVE-2026-54603
HIGH SEVERITYCVSS Score & Metrics
Base Score
8.6 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Vulnerability Description
OAuth2 is a Ruby wrapper for the OAuth 2.0 and 2.1 authorization frameworks, including OpenID Connect (OIDC). From 0.4.0 to 2.0.21, a protocol-relative redirect Location returned to OAuth2::Client#request overrides the request authority, so the bearer Authorization header is sent to an attacker-controlled host, leaking the credential. This issue is fixed in version 2.0.22.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-200
Source
NVD
Vendor
ruby-oauth
Product
oauth2
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