CVEs-PoC/2021/CVE-2021-23384.md

CVE-2021-23384

Description

The package koa-remove-trailing-slashes before 2.0.2 are 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.

POC

Reference

• https://snyk.io/vuln/SNYK-JS-KOAREMOVETRAILINGSLASHES-1085708
• https://snyk.io/vuln/SNYK-JS-KOAREMOVETRAILINGSLASHES-1085708

Github

No PoCs found on GitHub currently.