CVE-2021-23387
Open Redirect in trailing-slash
5.4
MEDIUM
CVSS 3.1
EPSS 0.26%
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.
How to fix CVE-2021-23387
To remediate CVE-2021-23387, upgrade the affected package to a fixed version below.
- —upgrade to 2.0.1 or later
Is CVE-2021-23387 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |