CVSS 3.1 Score 7.5 of 10 (high)


Published Nov 17, 2023
Updated: Nov 29, 2023
CWE ID 345


CVE-2023-48238 is a vulnerability that affects the joaquimserafim/json-web-token JavaScript library used for interacting with JSON Web Tokens (JWT). In versions of the library, there is a vulnerability to a JWT algorithm confusion attack. This vulnerability allows an attacker to craft a malicious JWT token containing the HS256 algorithm and sign it with the public RSA key of the victim application. The attack can only be successful if the RS256 algorithm is in use. It is recommended to use this algorithm as a best practice. The vulnerability has a high severity rating, with an impact on integrity and no impact on confidentiality. There are 18 affected products listed, and the remediation for this vulnerability is not specified in the provided information.


Explore Beyond the CVE Basics with Recorded Future's Vulnerability Intelligence

Note: This is just a basic overview providing quick insights into CVE-2023-48238 information. Gain full access to comprehensive CVE data, risk scores, prioritization, and mitigation data through Recorded Future's Vulnerability Intelligence:
  • Prioritize with Risk-Based Scoring
  • Explore the Extensive Vulnerability Database
  • Receive Early Alerts on Emerging CVEs
  • Focus on Critical Exploitable Vulnerabilities
  • Streamline Remediation with Integration Options