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CVE-2026-27588

Опубликовано: 24 фев. 2026
Источник: debian

Описание

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.

Пакеты

ПакетСтатусВерсия исправленияРелизТип
caddyfixed2.11.2-1package

Примечания

  • https://github.com/caddyserver/caddy/security/advisories/GHSA-x76f-jf84-rqj8

Связанные уязвимости

CVSS3: 9.1
ubuntu
6 месяцев назад

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.

CVSS3: 9.1
nvd
6 месяцев назад

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.

github
6 месяцев назад

Caddy: MatchHost becomes case-sensitive for large host lists (>100), enabling host-based route/auth bypass