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TI-2026-60038 Aliases CVE-2026-88012GHSA-7ghq-v6jf-g56c

Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded

Priority LOW 31CWE-770Published · 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 · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-770.

Summary

Traefik is an open source HTTP reverse proxy and load balancer. From 2.8.2 until 2.11.56 and 3.7.12, HTTP/3 entrypoints do not apply entryPoints..transport.respondingTimeouts.readTimeout because the timeout is enforced on a TCP connection and the HTTP/3 server has no corresponding QUIC stream deadline. An unauthenticated client can use a slow request body, trickling data indefinitely while holding a request and an upstream connection open and exhausting backends with bounded connection pools. This issue is fixed in 2.11.56 and 3.7.12.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00515 44th percentileScored 2026-11-07
Fix Fixed traefik (traefik): 2.11.56, 3.7.12github.com/traefik/traefik/v2 (Go): 2.11.56+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
traefiktraefik2.8.2 to before 2.11.56; 3.0.0 to before 3.7.122.11.56, 3.7.12Patch availableCNA
—github.com/traefik/traefik/v2 (Go)2.8.2 to before 2.11.562.11.56Patch availableGHSA-7ghq-v6jf-g56c
—github.com/traefik/traefik/v3 (Go)3.0.0 to before 3.7.123.7.12Patch availableGHSA-7ghq-v6jf-g56c
  • traefik Vendortraefik Affected 2.8.2 to before 2.11.56; 3.0.0 to before 3.7.12 Fixed in 2.11.56, 3.7.12 Patch available CNA
  • github.com/traefik/traefik/v2 (Go) Vendor— Affected 2.8.2 to before 2.11.56 Fixed in 2.11.56 Patch available GHSA-7ghq-v6jf-g56c
  • github.com/traefik/traefik/v3 (Go) Vendor— Affected 3.0.0 to before 3.7.12 Fixed in 3.7.12 Patch available GHSA-7ghq-v6jf-g56c

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*2.8.2 to before 2.11.56; 3.0.0 to before 3.7.12Vulnerabletraefik
  • cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* Versions 2.8.2 to before 2.11.56; 3.0.0 to before 3.7.12 Vulnerable ·traefik

Remediation

  • Fix · CNA traefik (traefik) Fixed in 2.11.56, 3.7.12
  • Fix · GHSA-7ghq-v6jf-g56c github.com/traefik/traefik/v2 (Go) Fixed in 2.11.56 Advisory →
  • Fix · GHSA-7ghq-v6jf-g56c github.com/traefik/traefik/v3 (Go) Fixed in 3.7.12 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-2026-88012
  2. 2026-10-03 Alias added: GHSA-7ghq-v6jf-g56c
  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 5

Advisory 1

Other 1

  • 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