CVE-2018-15598 Traefik Missing Authentication

What is CVE-2018-15598?

CVE-2018-15598 is a high-severity missing authorization vulnerability in Traefik Traefik, published on 21 Aug 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Containous Traefik 1.6.x before 1.6.6, when --api is used, exposes the configuration and secret if authentication is missing and the API's port is publicly reachable.

Weakness: CWE-287

Which versions are affected by CVE-2018-15598?

3 open source packages ship an affected version, including github.com/traefik/traefik. It affects 1 product.

Products include Traefik Traefik.

How do I fix CVE-2018-15598?

Upgrade github.com/traefik/traefik to 1.6.6 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2018-15598 being exploited?

There is no known exploitation of CVE-2018-15598 in the wild and no public exploit code.

Other vulnerabilities in Traefik Traefik

• CVE-2024-45410 HTTP client can remove the X-Forwarded headers in Traefik Critical 9.8
• CVE-2026-88877 Traefik v3.7.0 Authentication Bypass via from-to-www-redirect Critical 9.3
• CVE-2026-85595 Traefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuth Critical 9.3
• CVE-2026-88007 Traefik HTTP/3 Backend NTLM Connection Reuse Critical 9.1
• CVE-2026-88009 Traefik: Rootless HTTP/1 request-target routes as "/" but is forwarded verbatim, bypassing path-scoped routing, middleware guards and access logging High 8.8

All Traefik Traefik vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-2cjc-rgmp-x649, GO-2023-1950.