Medium, CVSS 5.4npmAmendedPublished
Open Redirect in koa-remove-trailing-slashes
CVE-2021-23384 · GHSA-r773-pmw3-f4mr
- Affected
- npm koa-remove-trailing-slashes < 2.0.2
- Fixed in
- 2.0.2· Vendor fix available
- Issue
- 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.
Recommended action: Upgrade to 2.0.2 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.