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TI-2026-60035 Aliases CVE-2026-88009GHSA-f52w-8j3h-j724

Traefik: Rootless HTTP/1 request-target routes as "/" but is forwarded verbatim…

Priority MEDIUM 44CWE-1286Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.57, and 3.7.13, Traefik accepts a rootless HTTP/1 request target that Go stores in URL.Opaque while leaving URL.Path empty. The rewriteRequestBuilder path evaluates routing, path sanitization, forwardAuth, encodedCharacters, and access logging against a path normalized to / but forwards URL.Opaque verbatim to the backend, allowing cross-vhost routing bypass, path-scoped authorization bypass, and access-log evasion when the backend interprets the opaque target as a path. This issue is fixed in 2.11.57 and 3.7.13.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00443 38th percentileScored 2026-11-07
Fix Fixed traefik (traefik): 2.11.57, 3.7.13github.com/traefik/traefik/v3 (Go): 3.7.13+1 more productRed Hat: 1 advisory

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 2.11.57; 3.0.0 to before 3.7.132.11.57, 3.7.13Patch availableCNA
—github.com/traefik/traefik/v3 (Go)3.0.0 to before 3.7.133.7.13Patch availableGHSA-f52w-8j3h-j724
—github.com/traefik/traefik/v2 (Go)before 2.11.572.11.57Patch availableGHSA-f52w-8j3h-j724
  • traefik Vendortraefik Affected before 2.11.57; 3.0.0 to before 3.7.13 Fixed in 2.11.57, 3.7.13 Patch available CNA
  • github.com/traefik/traefik/v3 (Go) Vendor— Affected 3.0.0 to before 3.7.13 Fixed in 3.7.13 Patch available GHSA-f52w-8j3h-j724
  • github.com/traefik/traefik/v2 (Go) Vendor— Affected before 2.11.57 Fixed in 2.11.57 Patch available GHSA-f52w-8j3h-j724

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*before 2.11.57; 3.0.0 to before 3.7.13Vulnerabletraefik
  • cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* Versions before 2.11.57; 3.0.0 to before 3.7.13 Vulnerable ·traefik

Remediation

  • Fix · CNA traefik (traefik) Fixed in 2.11.57, 3.7.13
  • Fix · GHSA-f52w-8j3h-j724 github.com/traefik/traefik/v3 (Go) Fixed in 3.7.13 Advisory →
  • Fix · GHSA-f52w-8j3h-j724 github.com/traefik/traefik/v2 (Go) Fixed in 2.11.57 Advisory →

Red Hat 1 advisory

  • RHSA-2026:90321 Released 2026-10-26 · Red Hat rating Critical
    Red Hat OpenShift Dev Spaces 3.31.0 Release.
    • Red Hat OpenShift Dev Spaces 3.31 registry.redhat.io/devspaces/code-rhel9, registry.redhat.io/devspaces/dashboard-rhel9, registry.redhat.io/devspaces/jetbrains-ide-rhel9 +8

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift Dev Spaces 3.31Fixed RHSA-2026:90321
Not affected: 1 product
  • Red Hat OpenShift Dev Spaces 3.31

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-88009
  2. 2026-10-03 Alias added: GHSA-f52w-8j3h-j724
  3. 2026-10-29 Fix available: Red Hat OpenShift Dev Spaces 3.31 · Red Hat
  4. 2026-10-30 Fix available: RHSA-2026:90321 · Red Hat

References

Patch 3

Advisory 1

Other 3

  • 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