CVE-2022-39271 HIGH

CVE-2022-39271: Traefik HTTP/2 connections management could cause a denial of service

Vendor Traefik
Product traefik
Weakness CWE-400
Published October 11, 2022
Last update April 23, 2025
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that assists in deploying microservices. There is a potential vulnerability in Traefik managing HTTP/2 connections. A closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service. There has been a patch released in versions 2.8.8 and 2.9.0-rc5. There are currently no known workarounds.

Key dates

02Disclosure timeline

October 11, 2022 CVE published
April 23, 2025 Record updated