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.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| report@snyk.io | 5.4 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N | 2.8 | 2.5 |
| nvd@nist.gov | 5.4 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N | 2.8 | 2.5 |
CVSS 2.0
Severity: MEDIUM
Problem Type: CWE-601,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| koa-remove-trailing-slashes_project | koa-remove-trailing-slashes | * |