CVE-2022-39271

Name: CVE-2022-39271
Creator: NVD / NIST
Published: 2022-10-11T14:15:09.883+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.02%

Last modified Jun 17, 2026

CVE-2022-39271 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.02% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.02%

58.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Traefik	Traefik	< 2.8.8	—
Traefik	Traefik	2.9.0	Rc1

References

https://github.com/traefik/traefik/releases/tag/v2.8.8Release Notes, Third Party Advisory
https://github.com/traefik/traefik/releases/tag/v2.9.0-rc5Release Notes, Third Party Advisory
https://github.com/traefik/traefik/security/advisories/GHSA-c6hx-pjc3-7fqrPatch, Third Party Advisory
https://github.com/traefik/traefik/releases/tag/v2.8.8Release Notes, Third Party Advisory
https://github.com/traefik/traefik/releases/tag/v2.9.0-rc5Release Notes, Third Party Advisory
https://github.com/traefik/traefik/security/advisories/GHSA-c6hx-pjc3-7fqrPatch, Third Party Advisory

Timeline

Published: Oct 11, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-39271?

How severe is CVE-2022-39271?

CVE-2022-39271 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.02% probability of exploitation in the next 30 days.

How do I fix CVE-2022-39271?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-39271?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST