This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-54603 →

DEBIAN-CVE-2026-54603

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-relativ...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 ruby-oauth2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.4-1+deb12u1"}]}]

Debian:13 ruby-oauth2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 ruby-oauth2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.25-1"}]}]

References

advisory security-tracker.debian.org