What is CVE-2021-23430?

CVE-2021-23430 is a high-severity vulnerability in Startserver Project, classified under Path Traversal. CVSS score: 7.5/10. Published 2021-08-24.

How severe is CVE-2021-23430?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Startserver Project

CVE-2021-23430

All versions of package startserver are vulnerable to Directory Traversal due to missing sanitization.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2021-08-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.018 (77.6th percentile), scored 2026-10-09.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Startserver Project
Startserver — versions 0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

snyk.io/vuln/SNYK-JS-STARTSERVER-1296388 (Exploit, Third Party Advisory)
github.com/xudafeng/startserver/blob/bef0c4e4d21da42a40ce87cf25fd54ac8d8cb2d8/l… (Broken Link)

Frequently asked questions

What is CVE-2021-23430?: CVE-2021-23430 is a high-severity vulnerability in Startserver Project, classified under Path Traversal. CVSS score: 7.5/10. Published 2021-08-24.
How severe is CVE-2021-23430?: High severity. CVSS v3 base score is 7.5 out of 10.