Uncontrolled Resource Consumption in Traefik

published 2023-12-04 2 y ago modified 2026-08-07 3 mo ago also GHSA-6fwg-jrfw-ff7p , GO-2023-2377 , EUVD-2023-3125

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 69%
public exploits: 0; none known

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.

Patch / fix

fixed in 2 distros 1 links 2

go github.com/traefik/traefik/v2 2.10.6
go github.com/traefik/traefik/v3 3.0.0-beta5

traefik2 openSUSE Tumbleweed 2.11.5-1.1
traefik openSUSE Tumbleweed 2.10.7-1.1

opensuse advisories openSUSE-SU-2024:14076-1 openSUSE-SU-2024:13506-1

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 23 mo ago (2024-11-27)

Exploit prediction

1.27% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/traefik/traefik/security/advisories/GHSA-6fwg-jrfw-ff7p referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
go	github.com/traefik/traefik/v2	<2.10.6	2.10.6
go	github.com/traefik/traefik/v3	<3.0.0-beta5	3.0.0-beta5
go	github.com/traefik/traefik	all versions	no fix listed

Affected products

traefik traefik

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption
CWE-770 Allocation of Resources Without Limits or Throttling

References

github.com /traefik/traefik/security/advisories/GHSA-6fwg-jrfw-ff7p
web, exploit, third-party-advisory, advisory
github.com /traefik/traefik/releases/tag/v2.10.6
web, release-notes
github.com /traefik/traefik/releases/tag/v3.0.0-beta5
web, release-notes
nvd.nist.gov /vuln/detail/CVE-2023-47633
advisory
github.com /traefik/traefik
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary