GitHub Advisoryadvisory · Go
GHSA-5423-jcjm-2gpv Traefik affected by Go HTTP Request Smuggling Vulnerability
CRITICAL
Official page ↗
- Ecosystem
- Go
- Packages
- github.com/traefik/traefik/v2, github.com/traefik/traefik/v3
- Severity
- Critical
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-1395
- Reviewed
- 2025-04-18
Affected packages
• Go github.com/traefik/traefik/v2: < 2.11.24 → fixed in 2.11.24
• Go github.com/traefik/traefik/v3: < 3.3.6 → fixed in 3.3.6
• Go github.com/traefik/traefik/v3: >= 3.4.0-rc1, < 3.4.0-rc2 → fixed in 3.4.0-rc2
Description
Summary
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
Patches
• https://github.com/traefik/traefik/releases/tag/v2.11.24
• https://github.com/traefik/traefik/releases/tag/v3.3.6
• https://github.com/traefik/traefik/releases/tag/v3.4.0-rc2
Related
Weakness · CWE (1)
- CWE-1395 Dependency on Vulnerable Third-Party Component weakness
References
- https://github.com/traefik/traefik/security/advisories/GHSA-5423-jcjm-2gpv web
- https://nvd.nist.gov/vuln/detail/CVE-2025-22871 advisory
- https://github.com/traefik/traefik package
- https://github.com/traefik/traefik/releases/tag/v2.11.24 web
- https://github.com/traefik/traefik/releases/tag/v3.3.6 web
- https://github.com/traefik/traefik/releases/tag/v3.4.0-rc2 web