{"id":77883,"date":"2026-02-24T19:58:28","date_gmt":"2026-02-24T16:28:28","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-27588-caddy-matchhost-becomes-case-sensitive-for-large-host-lists-100-enabling-host-based-route-auth-bypass\/"},"modified":"2026-02-24T19:58:28","modified_gmt":"2026-02-24T16:28:28","slug":"cve-2026-27588-caddy-matchhost-becomes-case-sensitive-for-large-host-lists-100-enabling-host-based-route-auth-bypass","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-27588-caddy-matchhost-becomes-case-sensitive-for-large-host-lists-100-enabling-host-based-route-auth-bypass\/","title":{"rendered":"CVE-2026-27588 &#8211; Caddy: MatchHost becomes case-sensitive for large host lists (&gt;100), enabling host-based route\/auth bypass"},"content":{"rendered":"<p>CVE ID : CVE-2026-27588<\/p>\n<p>Published :  Feb. 24, 2026, 4:28 p.m. | 38\u00a0minutes ago<\/p>\n<p>Description : Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy&#8217;s HTTP `host` request matcher is documented as case-insensitive, but when configured with a large host list (&gt;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.<\/p>\n<p>Severity: 0.0 | NA<\/p>\n<p>Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID : CVE-2026-27588 Published : Feb. 24, 2026, 4:28 p.m. | 38\u00a0minutes ago Description : Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy&#8217;s HTTP `host` request matcher is documented as case-insensitive, but when configured with a large host list (&gt;100 entries) it becomes case-sensitive due to &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-77883","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/77883","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=77883"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/77883\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=77883"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=77883"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=77883"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}