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  5. GHSA-5423-jcjm-2gpv

GHSA-5423-jcjm-2gpv: Traefik affected by Go HTTP Request Smuggling Vulnerability

April 18, 2025

net/http: request smuggling through invalid chunked data: The net/http package accepts data in the chunked transfer encoding containing an invalid chunk-size line terminated by a bare LF. When used in conjunction with a server or proxy which incorrectly interprets a bare LF in a chunk extension as part of the extension, this could permit request smuggling. [CVE-2025-22871] Vendor Affected Components: Go: 1.23.x < 1.23.8

More Details: CVE-2025-22871

References

  • github.com/advisories/GHSA-5423-jcjm-2gpv
  • github.com/traefik/traefik
  • github.com/traefik/traefik/releases/tag/v2.11.24
  • github.com/traefik/traefik/releases/tag/v3.3.6
  • github.com/traefik/traefik/releases/tag/v3.4.0-rc2
  • github.com/traefik/traefik/security/advisories/GHSA-5423-jcjm-2gpv
  • nvd.nist.gov/vuln/detail/CVE-2025-22871

Code Behaviors & Features

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Affected versions

All versions before 3.3.6, all versions starting from 3.4.0-rc1 before 3.4.0-rc2, version 3.4.0-rc1

Fixed versions

  • 3.3.6
  • 3.4.0-rc2

Solution

Upgrade to versions 3.3.6, 3.4.0-rc2 or above.

Impact 9.1 CRITICAL

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

Learn more about CVSS

Weakness

  • CWE-1395: Dependency on Vulnerable Third-Party Component

Source file

go/github.com/traefik/traefik/v3/GHSA-5423-jcjm-2gpv.yml

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