• Sasibhushana Matcha
• Dr Munish Kumar

In the evolving landscape of software development, ensuring robust security mechanisms is paramount to protect sensitive data and maintain user trust. OAuth 2.0 has emerged as a leading authorization framework that facilitates secure and efficient access delegation between applications. This paper explores the integration of OAuth 2.0 to enhance software security, focusing on effective implementation strategies and comprehensive vulnerability mitigation techniques. Initially, the study delineates the core components and flow of OAuth 2.0, highlighting its advantages in managing user authentication and authorization without exposing credentials. Subsequently, it delves into various implementation strategies, including the selection of appropriate grant types, secure storage of tokens, and adherence to best practices in redirect URI management. The research further examines common vulnerabilities associated with OAuth 2.0, such as token leakage, authorization code interception, and improper scope handling. To address these issues, the paper proposes a set of mitigation measures, including the use of Proof Key for Code Exchange (PKCE), enforcing strict token expiration policies, and employing robust encryption techniques. Additionally, the study presents case studies of successful OAuth 2.0 deployments, illustrating practical applications and lessons learned. By systematically analyzing both the strengths and potential pitfalls of OAuth 2.0, this paper provides a comprehensive framework for developers and security professionals aiming to implement secure authorization mechanisms. The findings underscore the critical role of meticulous configuration and continuous monitoring in leveraging OAuth 2.0 to bolster software security. Ultimately, this research contributes to the broader discourse on secure software architecture, offering actionable insights to mitigate risks and enhance the resilience of modern applications against emerging threats.

OAuth 2.0, software security, authorization framework, vulnerability mitigation, token management, grant types, secure token storage, PKCE, token expiration, encryption, authorization code interception, redirect URI security, scope handling, OAuth 2.0 implementation, software architecture, security best practices.

"Enhancing Software Security with OAuth 2.0: Implementation Strategies and Vulnerability Mitigation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 3, page no.e886-e902, March-2025, Available :http://www.jetir.org/papers/JETIR2503517.pdf

"Enhancing Software Security with OAuth 2.0: Implementation Strategies and Vulnerability Mitigation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 3, page no. ppe886-e902, March-2025, Available at : http://www.jetir.org/papers/JETIR2503517.pdf