CVEvulnerability

CVE-2026-54603

8.6 HIGH Published 2026-07-28 Modified 2026-10-23 Official page ↗
Status
Awaiting Analysis
Published
2026-07-28
Last modified
2026-10-23
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weaknesses
CWE-200, CWE-601

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.

Related

Weakness · CWE (2)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-601 URL Redirection to Untrusted Site weakness

References