What is CVE-2021-23718?

CVE-2021-23718 is a medium-severity vulnerability in Ssrf-Agent Project, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2021-11-22.

How severe is CVE-2021-23718?

Medium severity. CVSS v3 base score is 6.5 out of 10.

SSRF in Ssrf-Agent Project

CVE-2021-23718

The package ssrf-agent before 1.0.5 are vulnerable to Server-side Request Forgery (SSRF) via the defaultIpChecker function. It fails to properly validate if the IP requested is private.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2021-11-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.016 (75.2th percentile), scored 2026-10-06.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: +0.001

Affected products

Ssrf-Agent Project
Ssrf-Agent — versions unspecified

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

snyk.io/vuln/SNYK-JS-SSRFAGENT-1584362 (Exploit, Third Party Advisory)
github.com/welefen/ssrf-agent/blob/cec2b85fe8886ad6926a247a3e059d8369ec022b/ind… (Third Party Advisory, Broken Link)
security.netapp.com/advisory/ntap-20211203-0005/ (Third Party Advisory)

Frequently asked questions

What is CVE-2021-23718?: CVE-2021-23718 is a medium-severity vulnerability in Ssrf-Agent Project, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2021-11-22.
How severe is CVE-2021-23718?: Medium severity. CVSS v3 base score is 6.5 out of 10.