VULNERABILITY INTELLIGENCE
CVE-2021-23387
CVSS score5.4 MEDIUM
EPSS probability1.15%
CISA KEVNot currently listed
Published2021-05-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Description
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.
Weakness classification
- nvd@nist.gov: CWE-601
Primary references
- report@snyk.io — Broken Link
- report@snyk.io — Patch, Third Party Advisory
- report@snyk.io — Exploit, Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Patch, Third Party Advisory