CVE-2023-47633: Uncontrolled Resource Consumption in Traefik

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-12-04 · updated 2026-06-17
Weakness: CWE-400

Description

Traefik is an open source HTTP reverse proxy and load balancer. The traefik docker container uses 100% CPU when it serves as its own backend, which is an automatically generated route resulting from the Docker integration in the default configuration. This issue has been addressed in versions 2.10.6 and 3.0.0-beta5. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

Traefik: through 2.10.5; 3.0.0-beta1, 3.0.0-beta2, 3.0.0-beta3, 3.0.0-beta4

References

https://github.com/traefik/traefik/releases/tag/v2.10.6
https://github.com/traefik/traefik/releases/tag/v3.0.0-beta5
https://github.com/traefik/traefik/security/advisories/GHSA-6fwg-jrfw-ff7p
https://github.com/traefik/traefik/releases/tag/v2.10.6
https://github.com/traefik/traefik/releases/tag/v3.0.0-beta5
https://github.com/traefik/traefik/security/advisories/GHSA-6fwg-jrfw-ff7p

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