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TI-2023-13474 Aliases CVE-2023-29013GHSA-7hj9-rv74-5g92

HTTP header parsing could cause a deny of service

Priority MEDIUM 41CWE-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 (pronounced traffic) is a modern HTTP reverse proxy and load balancer for deploying microservices. There is a vulnerability in Go when parsing the HTTP headers, which impacts Traefik. HTTP header parsing could allocate substantially more memory than required to hold the parsed headers. This behavior could be exploited to cause a denial of service. This issue has been patched in versions 2.9.10 and 2.10.0-rc2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01085 65th percentileScored 2026-11-07
Fix Fixed traefik (traefik): 2.9.10github.com/traefik/traefik/v2 (Go): 2.9.10, 2.10.0-rc2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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

VendorProductAffected versionsFixed inStatusSource
traefiktraefikbefore 2.9.10; = 2.10.0-rc12.9.10Patch availableCNA
—github.com/traefik/traefik/v2 (Go)before 2.9.102.9.10Patch availableGHSA-7hj9-rv74-5g92
—github.com/traefik/traefik/v2 (Go)2.10.0-rc1 to before 2.10.0-rc22.10.0-rc2Patch availableGHSA-7hj9-rv74-5g92
  • traefik Vendortraefik Affected before 2.9.10; = 2.10.0-rc1 Fixed in 2.9.10 Patch available CNA
  • github.com/traefik/traefik/v2 (Go) Vendor— Affected before 2.9.10 Fixed in 2.9.10 Patch available GHSA-7hj9-rv74-5g92
  • github.com/traefik/traefik/v2 (Go) Vendor— Affected 2.10.0-rc1 to before 2.10.0-rc2 Fixed in 2.10.0-rc2 Patch available GHSA-7hj9-rv74-5g92

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*before 2.9.10Vulnerabletraefik
cpe:2.3:a:traefik:traefik:2.10.0:rc1:*:*:*:*:*:*2.10.0 rc1Vulnerabletraefik
  • cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* Versions before 2.9.10 Vulnerable ·traefik
  • cpe:2.3:a:traefik:traefik:2.10.0:rc1:*:*:*:*:*:* Versions 2.10.0 rc1 Vulnerable ·traefik

Remediation

  • Fix · CNA traefik (traefik) Fixed in 2.9.10
  • Fix · GHSA-7hj9-rv74-5g92 github.com/traefik/traefik/v2 (Go) Fixed in 2.9.10 Advisory →
  • Fix · GHSA-7hj9-rv74-5g92 github.com/traefik/traefik/v2 (Go) Fixed in 2.10.0-rc2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-29013
  2. 2026-10-03 Alias added: GHSA-7hj9-rv74-5g92

References

Patch 1

Advisory 4

Other 5

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2023-25774 Uncontrolled Resource Consumption in Traefik CVSS 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
See all 83 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences