Open Redirect in Koa-Remove-Trailing-Slashes Project
CVE-2021-23384
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.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.008 (56.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Koa-Remove-Trailing-Slashes Project
- Koa-Remove-Trailing-Slashes — versions unspecified
Weakness classification (CWE)
References
- snyk.io/vuln/SNYK-JS-KOAREMOVETRAILINGSLASHES-1085708 (Exploit, Third Party Advisory)
- github.com/vgno/koa-remove-trailing-slashes/blame/6a01ba8fd019bd3ece44879c55303… (Broken Link)
Frequently asked questions
- What is CVE-2021-23384?
- CVE-2021-23384 is a medium-severity vulnerability in Koa-Remove-Trailing-Slashes Project, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 5.4/10. Published 2021-05-17.
- How severe is CVE-2021-23384?
- Medium severity. CVSS v3 base score is 5.4 out of 10.