CVE-2026-54603 vulnerabilities

Vulnerabilities for packages: ruby3.3-oauth2, ruby4.0-oauth2, ruby3.2-oauth2, ruby3.4-oauth2...

CVE-2026-54603 vulnerabilities

Vulnerabilities for packages: ruby3.3-oauth2, ruby3.4-oauth2, gitlab-rails-ce, gitlab-rails-ce-fips, ruby3.2-oauth2, ruby4.0-oauth2...

CVE-2026-54603 OAuth2::Client#request: Protocol-relative redirect Location overrides authority, leaking bearer Authorization to attacker host

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::Clientrequest overrides the request authority, so the bearer Authorization header is sent to an...