{"id":81971,"date":"2026-07-14T12:46:41","date_gmt":"2026-07-14T09:16:41","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-6790-eclipse-jetty-host-header-validation-mismatch-vulnerability\/"},"modified":"2026-07-14T12:46:41","modified_gmt":"2026-07-14T09:16:41","slug":"cve-2026-6790-eclipse-jetty-host-header-validation-mismatch-vulnerability","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-6790-eclipse-jetty-host-header-validation-mismatch-vulnerability\/","title":{"rendered":"CVE-2026-6790 &#8211; Eclipse Jetty Host Header Validation Mismatch Vulnerability"},"content":{"rendered":"<p>CVE ID :CVE-2026-6790<\/p>\n<p>  Published : July 14, 2026, 9:16 a.m. | 14\u00a0minutes ago<\/p>\n<p>  Description :In Eclipse Jetty, for HTTP\/1, HTTP\/2 and HTTP\/3 requests, there is no strict check that the request authority (host and port) matches what provided in the Host header (if present).<\/p>\n<p>This was not enforced in earlier HTTP RFC (for example, in RFC 2616), but it is in the latest RFC (9110 and 9112).<\/p>\n<p>This mismatch can cause a number of problems that may be classified as vulnerabilities such as:<\/p>\n<p>  *  <\/p>\n<p>      URI constructions (for example, for redirects &#8212; this is typical for login pages)<\/p>\n<p>  *  <\/p>\n<p>      Virtual host selection<\/p>\n<p>  *  <\/p>\n<p>      Reverse proxying<\/p>\n<p>  *  <\/p>\n<p>      Misleading logs<\/p>\n<p>  *  <\/p>\n<p>      Etc.<\/p>\n<p>Given that the latest RFCs require that request authority and Host header must match, Jetty should enforce this invariant.<\/p>\n<p>  Severity: 5.3 | MEDIUM<\/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-2026-6790 Published : July 14, 2026, 9:16 a.m. | 14\u00a0minutes ago Description :In Eclipse Jetty, for HTTP\/1, HTTP\/2 and HTTP\/3 requests, there is no strict check that the request authority (host and port) matches what provided in the Host header (if present). This was not enforced in earlier HTTP RFC (for example, in &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-81971","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81971","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=81971"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81971\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=81971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=81971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=81971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}