oauth2-proxy — Vulnerabilities & Security Advisories 9

OAuth2-proxy serves as a reverse proxy and authentication gateway for OAuth 2.0, enabling secure access control for web applications and services. Historically, it has been susceptible to multiple vulnerabilities including remote code execution, cross-site scripting, and privilege escalation, with nine CVEs documented to date. Notable security characteristics include its role in managing authentication flows and protecting endpoints, though past incidents have revealed flaws in session handling and input validation that could allow unauthorized access or bypass security controls. The project's security posture has evolved through patches, but its complexity in handling authentication tokens and headers remains a potential attack surface requiring careful configuration and monitoring.