{"id":82113,"date":"2026-07-17T02:46:17","date_gmt":"2026-07-16T23:16:17","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-44452-h2o-is-vulnerable-to-heap-overrun\/"},"modified":"2026-07-17T02:46:17","modified_gmt":"2026-07-16T23:16:17","slug":"cve-2026-44452-h2o-is-vulnerable-to-heap-overrun","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-44452-h2o-is-vulnerable-to-heap-overrun\/","title":{"rendered":"CVE-2026-44452 &#8211; h2o is vulnerable to heap overrun"},"content":{"rendered":"<p>CVE ID :CVE-2026-44452<\/p>\n<p>  Published : July 16, 2026, 11:16 p.m. | 18\u00a0minutes ago<\/p>\n<p>  Description :h2o is an HTTP server with support for HTTP\/1.x, HTTP\/2 and HTTP\/3. Prior to commit 8dc37cb, when h2o receives a ClientHello message over TLS or QUIC and it contains a zero-length SNI extension, the h2o server runs over the zero-length hostname while trying to copy the hostname, assuming that it is NULL-terminated. This is a potential denial-of-service attack vector in sense that it might trigger segmentation violation. This issue has been fixed by commit 8dc37cb.<\/p>\n<p>  Severity: 5.9 | 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-2026-44452 Published : July 16, 2026, 11:16 p.m. | 18\u00a0minutes ago Description :h2o is an HTTP server with support for HTTP\/1.x, HTTP\/2 and HTTP\/3. Prior to commit 8dc37cb, when h2o receives a ClientHello message over TLS or QUIC and it contains a zero-length SNI extension, the h2o server runs over the zero-length hostname &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-82113","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82113","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=82113"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82113\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}