---
id: CVE-2023-29013
aliases:
  - GHSA-7hj9-rv74-5g92
title: 'Traefik HTTP header parsing could cause a denial of service '
summary: 'Traefik HTTP header parsing could cause a denial of service '
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: traefik
product: github.com/traefik/traefik/v2
ecosystem: go
affected:
  - github.com/traefik/traefik/v2 < 2.9.10
  - 'github.com/traefik/traefik/v2 >= 2.10.0-rc1, < 2.10.0-rc2'
patched:
  - github.com/traefik/traefik/v2 2.9.10
  - github.com/traefik/traefik/v2 2.10.0-rc2
published: '2023-04-11'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:49:53.644478029Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-7hj9-rv74-5g92'
references:
  - url: 'https://github.com/traefik/traefik/security/advisories/GHSA-7hj9-rv74-5g92'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2023-29013'
  - url: >-
      https://github.com/traefik/traefik/commit/4ed3964b3586565519249bbdc55eb1b961c08c49
  - url: 'https://github.com/advisories/GHSA-8v5j-pwr7-w5f8'
  - url: 'https://github.com/traefik/traefik'
  - url: 'https://github.com/traefik/traefik/releases/tag/v2.10.0-rc2'
  - url: 'https://github.com/traefik/traefik/releases/tag/v2.9.10'
  - url: 'https://groups.google.com/g/golang-announce/c/Xdv6JL9ENs8/m/OV40vnafAwAJ'
  - url: 'https://security.netapp.com/advisory/ntap-20230517-0008'
tags:
  - osv
  - go
epss: 0.01085
epssPercentile: 0.6383
ingestedAt: '2026-09-12T03:13:01.764Z'
---

## Overview

### Impact

There is a vulnerability in [Go when parsing the HTTP headers](https://groups.google.com/g/golang-announce/c/Xdv6JL9ENs8/m/OV40vnafAwAJ), 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.

### References

- [CVE-2023-24534](https://www.cve.org/CVERecord?id=CVE-2023-24534)

### Patches
- https://github.com/traefik/traefik/releases/tag/v2.9.10
- https://github.com/traefik/traefik/releases/tag/v2.10.0-rc2

### Workarounds

No workaround.

### For more information

If you have any questions or comments about this advisory, please [open an issue](https://github.com/traefik/traefik/issues).

## Affected packages

- `github.com/traefik/traefik/v2 < 2.9.10`
- `github.com/traefik/traefik/v2 >= 2.10.0-rc1, < 2.10.0-rc2`

## Remediation

Upgrade to a patched release:

- `github.com/traefik/traefik/v2 2.9.10`
- `github.com/traefik/traefik/v2 2.10.0-rc2`