What’s Vulnerable › Vulnerabilities

CVE-2021-23718: Server-side Request Forgery (SSRF)

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-11-22 · updated 2026-06-17
• Weakness: CWE-918

Description

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.

Affected products

• ssrf-agent: before 1.0.5 — fixed in 1.0.5

How to fix

Upgrade to a fixed version: ssrf-agent 1.0.5. Check the vendor advisory for mitigations.

References

• https://github.com/welefen/ssrf-agent/blob/cec2b85fe8886ad6926a247a3e059d8369ec022b/index.js%23L13
• https://security.netapp.com/advisory/ntap-20211203-0005/
• https://snyk.io/vuln/SNYK-JS-SSRFAGENT-1584362
• https://github.com/welefen/ssrf-agent/blob/cec2b85fe8886ad6926a247a3e059d8369ec022b/index.js%23L13
• https://security.netapp.com/advisory/ntap-20211203-0005/
• https://snyk.io/vuln/SNYK-JS-SSRFAGENT-1584362

Get alerted when CVE-2021-23718 or the next vulnerability affects your stack