CVE-2022-39271

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    CVE-2022-39271

    Published: 11 Oct 2022Last Modified: 12 Aug 2026

    Summary: Traefik HTTP/2 connections management could cause a denial of service

    Details: 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.

    References: https://github.com/traefik/traefik/releases/tag/v2.8.8, https://github.com/traefik/traefik/releases/tag/v2.9.0-rc5, https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39271.json, https://github.com/traefik/traefik/security/advisories/GHSA-c6hx-pjc3-7fqr, https://nvd.nist.gov/vuln/detail/CVE-2022-39271

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -3812e6f3cbc31725b8909a226ccec5f29ae59de8

    Affected versions

    2.9.0-rc1
    2.9.0-rc2
    2.9.0-rc3
    2.9.0-rc4

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2022-39271 | CVE-DB