CVE-2021-23384: URL Redirection to Untrusted Site (Open Redirect)

May 17, 2021 (updated May 25, 2021)

The package koa-remove-trailing-slashes is vulnerable to Open Redirect via the use of trailing double slashes in the URL when accessing the vulnerable endpoint (such as https://example.com//attacker.example/). The vulnerable code is in index.js::removeTrailingSlashes(), as the web server uses relative URLs instead of absolute URLs.

References

nvd.nist.gov/vuln/detail/CVE-2021-23384

Code Behaviors & Features

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