---
id: CVE-2026-88012
title: Traefik is an open source HTTP reverse proxy and load balancer
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 connectio…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-770
vendor: traefik
product: traefik
affected:
  - 'traefik >= 2.8.2, < 2.11.56'
  - 'traefik >= 3.0.0, < 3.7.12'
patched:
  - traefik 3.7.12
published: '2026-09-10'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T20:00:02.687'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88012'
references:
  - url: >-
      https://github.com/traefik/traefik/commit/a8d0bc425859dde7481a6c9a324e610b81d754d0
    label: security-advisories@github.com
  - url: 'https://github.com/traefik/traefik/pull/13717'
    label: security-advisories@github.com
  - url: 'https://github.com/traefik/traefik/releases/tag/v2.11.56'
    label: security-advisories@github.com
  - url: 'https://github.com/traefik/traefik/releases/tag/v3.7.12'
    label: security-advisories@github.com
  - url: 'https://github.com/traefik/traefik/security/advisories/GHSA-7ghq-v6jf-g56c'
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88012'
  - url: 'https://github.com/traefik/traefik'
tags:
  - nvd
  - cve.org
  - osv
  - go
epss: 0.00515
epssPercentile: 0.41339
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-11T16:34:35.938612Z'
ingestedAt: '2026-09-14T11:11:19.881Z'
aliases:
  - GHSA-7ghq-v6jf-g56c
  - CVE-2026-88878
  - GO-2026-6454
ecosystem: go
---

## Overview

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.

## Affected

- `traefik >= 2.8.2, < 2.11.56`
- `traefik >= 3.0.0, < 3.7.12`

## Remediation

Upgrade past the affected range:

- `traefik 3.7.12`

## Package advisory (CVE-2026-88012)

Affected packages:

- `github.com/traefik/traefik/v2 >= 2.8.2, < 2.11.56`
- `github.com/traefik/traefik/v3 >= 3.0.0, < 3.7.12`

Patched in:

- `github.com/traefik/traefik/v2 2.11.56`
- `github.com/traefik/traefik/v3 3.7.12`

Source: https://osv.dev/vulnerability/GHSA-7ghq-v6jf-g56c