Uncontrolled Resource Consumption in Traefik
Priority HIGH 72CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-400.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01269 69th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed traefik (traefik): 2.10.6, 3.0.0-beta5github.com/traefik/traefik/v2 (Go): 2.10.6+1 more product
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| traefik | traefik | before 2.10.6; 3.0.0-beta1 to before 3.0.0-beta5 | 2.10.6, 3.0.0-beta5 | Patch available | CNA |
| — | github.com/traefik/traefik/v2 (Go) | before 2.10.6 | 2.10.6 | Patch available | GHSA-6fwg-jrfw-ff7p |
| — | github.com/traefik/traefik/v3 (Go) | before 3.0.0-beta5 | 3.0.0-beta5 | Patch available | GHSA-6fwg-jrfw-ff7p |
- traefik Vendortraefik Affected before 2.10.6; 3.0.0-beta1 to before 3.0.0-beta5 Fixed in 2.10.6, 3.0.0-beta5 Patch available CNA
- github.com/traefik/traefik/v2 (Go) Vendor— Affected before 2.10.6 Fixed in 2.10.6 Patch available GHSA-6fwg-jrfw-ff7p
- github.com/traefik/traefik/v3 (Go) Vendor— Affected before 3.0.0-beta5 Fixed in 3.0.0-beta5 Patch available GHSA-6fwg-jrfw-ff7p
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | up to 2.10.5 | Vulnerable | traefik |
| cpe:2.3:a:traefik:traefik:3.0.0:beta1:*:*:*:*:*:* | 3.0.0 beta1 | Vulnerable | traefik |
| cpe:2.3:a:traefik:traefik:3.0.0:beta2:*:*:*:*:*:* | 3.0.0 beta2 | Vulnerable | traefik |
| cpe:2.3:a:traefik:traefik:3.0.0:beta3:*:*:*:*:*:* | 3.0.0 beta3 | Vulnerable | traefik |
| cpe:2.3:a:traefik:traefik:3.0.0:beta4:*:*:*:*:*:* | 3.0.0 beta4 | Vulnerable | traefik |
- cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* Versions up to 2.10.5 Vulnerable ·traefik
- cpe:2.3:a:traefik:traefik:3.0.0:beta1:*:*:*:*:*:* Versions 3.0.0 beta1 Vulnerable ·traefik
- cpe:2.3:a:traefik:traefik:3.0.0:beta2:*:*:*:*:*:* Versions 3.0.0 beta2 Vulnerable ·traefik
- cpe:2.3:a:traefik:traefik:3.0.0:beta3:*:*:*:*:*:* Versions 3.0.0 beta3 Vulnerable ·traefik
- cpe:2.3:a:traefik:traefik:3.0.0:beta4:*:*:*:*:*:* Versions 3.0.0 beta4 Vulnerable ·traefik
Remediation
- Fix · CNA traefik (traefik) Fixed in 2.10.6, 3.0.0-beta5
- Fix · GHSA-6fwg-jrfw-ff7p github.com/traefik/traefik/v2 (Go) Fixed in 2.10.6 Advisory →
- Fix · GHSA-6fwg-jrfw-ff7p github.com/traefik/traefik/v3 (Go) Fixed in 3.0.0-beta5 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-47633
- 2026-10-03 Alias added: GHSA-6fwg-jrfw-ff7p
References
More Traefik vulnerabilities
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2025-40914 Traefik doesn't Prevent Path Normalization Bypass in Router + Middleware Rules CVSS 4.0MEDIUM 6.9
- TI-2022-07529 Authorization header displayed in the debug logs CVSS 3.1MEDIUM 6.5
- TI-2024-30459 HTTP client can remove the X-Forwarded headers in Traefik CVSS 3.1CRITICAL 9.8
- TI-2026-60261 Traefik v3.7.0 Authentication Bypass via from-to-www-redirect CVSS 4.0CRITICAL 9.3
- TI-2026-60033 Traefik HTTP/3 Backend NTLM Connection Reuse CVSS 4.0CRITICAL 9.1
Sources
- CVE-2023-47633 · CVE Program
- CVE-2023-47633 · NVD
- FIRST EPSS
- GHSA-6fwg-jrfw-ff7p · GitHub Advisory Database · CC BY 4.0
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