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Public proof of conceptFix available

CVE-2023-47633

A public proof of concept exists; no exploitation attested.

  • Published2023-12-04
  • WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2023-12-0421:15CVE publishedNVD

Versions per branch

OSV
traefik/traefik
BranchAffectedFixed in
—all versionsno fix published
traefik/traefik
BranchAffectedFixed in
2.10< 2.10.62.10.6
traefik/traefik
BranchAffectedFixed in
3.0< 3.0.0-beta53.0.0-beta5

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • traefik
    Affected
    • = < 2.10.6no fix stated
    • = >= 3.0.0-beta1, < 3.0.0-beta5no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-12-04

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • traefikopenSUSE:Tumbleweedall versions · fixed in 2.10.7-1.1
  • traefikEchoall versions · no fixed version listed
  • traefik2openSUSE:Tumbleweedall versions · fixed in 2.11.5-1.1

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2024-11-27
  • CNACVSS 3.17.5known since 2026-10-23
  • NVDCVSS 3.17.5read 2026-10-23
  • CNAweakness (CWE)CWE-400known since 2026-10-23
  • FIRST EPSSEPSS score1.3 %2026-11-09
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2023-12-05

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2023-12-04
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-6fwg-jrfw-ff7p

Frequently asked questions

What is CVE-2023-47633?

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.

Is CVE-2023-47633 actively exploited?

A proof-of-concept exploit exists for CVE-2023-47633, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-47633?

CVE-2023-47633 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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