CyberRota Analysis
AI-GeneratedTraefik versions 3.2.0 to 3.7.12 are vulnerable due to inadequate inspection of HTTP trailers, allowing unauthenticated clients to inject malicious header values that can spoof identity or routing data. This vulnerability poses a high risk to environments using Traefik as a reverse proxy or load balancer, particularly those handling sensitive data or relying on trusted headers for routing decisions. Organizations utilizing affected versions should prioritize upgrading to version 3.7.13 or later to mitigate potential exploitation.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Traefik is an open source HTTP reverse proxy and load balancer. From 3.2.0 until 3.7.13, Traefik entrypoint defenses aliasHeadersStrategy, underscoreHeadersStrategy, and forwardedHeaders inspect req.Header but not req.Trailer, allowing an unauthenticated client to submit an aliasing or trusted header name in an HTTP/1.1 chunked trailer or an HTTP/2 trailer. When the retry or buffering middleware reads the body before the reverse proxy clones the request, the attacker-controlled trailer value reaches a backend that merges trailers into the header namespace, bypassing the documented delete or reject behavior and potentially spoofing identity or forwarded routing data. This issue is fixed in 3.7.13.
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