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Vulnerabilities

Vulnerability · CVE-2022-39271

Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that assists in deploying microservices.

Published Oct 11, 2022 · catalog updated Jun 17, 2026 · Traefik (pronounced traffic) is

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2022-39271. EPSS is 1.36%. Act only if a listed version of Traefik (pronounced traffic) is is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Traefik (pronounced traffic) is).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.36%
Remediation
Version ranges on file
Affected products
cpe traefik/traefik

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe traefik/traefik2.9.0
  • cpe traefik/traefik< 2.8.8

How to fix CVE-2022-39271

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2022-39271. EPSS is 1.36%. Act only if a listed version of Traefik (pronounced traffic) is is installed.

Which versions are affected?

Compare what you have installed with 2.9.0, < 2.8.8. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-400: Uncontrolled Resource Consumption; CWE-755: Improper Handling of Exceptional Conditions. EPSS 1.36%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Traefik security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 11, 2022 · Monitored products — high

    Detected

    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.

  2. Jun 17, 2026 · Monitored products — high

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2022-39271

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-2022-39271

    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.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • Monitored products — highNov 2, 2026