medium5.4
CVE-2021-23387
Open Redirect in trailing-slash
Impact
The package trailing-slash before 2.0.1 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::createTrailing(), as the web server uses relative URLs instead of absolute URLs.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | trailing-slash | < 2.0.1 | 2.0.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Trailing-Slash Project | Trailing-Slash | before 2.0.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/fardog/trailing-slash/blob/f640ece055fe85275c983de5eb94661b95e35670/index.js%23L36
- https://github.com/fardog/trailing-slash/commit/f8e66f1429308247e5a119d430203077d8f05048
- https://snyk.io/vuln/SNYK-JS-TRAILINGSLASH-1085707
- https://github.com/advisories/GHSA-rfhr-62xp-2fp2
- https://nvd.nist.gov/vuln/detail/CVE-2021-23387