GHSA-7hx8-2rxv-66xv: 
JavaScript vulnerability analysis and mitigation

A high-severity Denial of Service vulnerability was identified in the hapi npm package (GHSA-7hx8-2rxv-66xv). The vulnerability was discovered and reviewed on August 31, 2020, published to the GitHub Advisory Database on September 3, 2020, and last updated on January 9, 2023. The vulnerability affects all versions of the hapi package (GitHub Advisory).

The vulnerability exists in the CORS request handler of the hapi package. The handler contains a flaw that causes the function to throw a system error when encountering invalid header values. This occurs specifically when there is no unhandled exception handler available in the application (GitHub Advisory).

When exploited, this vulnerability can cause the application to exit, effectively allowing attackers to shut down services. This creates a denial of service condition that affects the availability of applications using the vulnerable hapi package (GitHub Advisory).

The vulnerability can be triggered by sending requests with specifically crafted invalid header values to applications using any version of the hapi package. No specific exploit complexity details were provided in the advisory (GitHub Advisory).

The original hapi package is deprecated, and users are strongly recommended to update their dependencies to use @hapi/hapi, which is the maintained version of the package. No direct patches are available for the original hapi package (GitHub Advisory).