medium5.4
CVE-2021-23384
Open Redirect in koa-remove-trailing-slashes
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | koa-remove-trailing-slashes | < 2.0.2 | 2.0.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Koa-Remove-Trailing-Slashes Project | Koa-Remove-Trailing-Slashes | before 2.0.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/vgno/koa-remove-trailing-slashes/blame/6a01ba8fd019bd3ece44879c553037ad96ba7d47/index.js%23L31
- https://snyk.io/vuln/SNYK-JS-KOAREMOVETRAILINGSLASHES-1085708
- https://github.com/advisories/GHSA-r773-pmw3-f4mr
- https://nvd.nist.gov/vuln/detail/CVE-2021-23384
- https://github.com/vgno/koa-remove-trailing-slashes/commit/e7ce4000e9fe4d957332df1056640a22ebea28ee
- https://github.com/vgno/koa-remove-trailing-slashes/blame/6a01ba8fd019bd3ece44879c553037ad96ba7d47/index.js#L31