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CVE-2026-27588 Caddy is an extensible server platform that uses TLS by default

Description

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy's HTTP `host` request matcher is documented as case-insensitive, but when configured with a large host list (>100 entries) it becomes case-sensitive due to an optimized matching path. An attacker can bypass host-based routing and any access controls attached to that route by changing the casing of the `Host` header. Version 2.11.1 contains a fix for the issue.

Produits et versions touchés

Produit Versions touchées Corrigé en
caddy 2.11 premières → < 2.11.1 2.11.1

Références

Chronologie

  1. Publiée
  2. Dernière modification
Les 17 CVE de caddy →
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