{"id":78950,"date":"2026-05-28T02:46:48","date_gmt":"2026-05-27T23:16:48","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-9739-google-chrome-sse-dns-rebinding\/"},"modified":"2026-05-28T02:46:48","modified_gmt":"2026-05-27T23:16:48","slug":"cve-2026-9739-google-chrome-sse-dns-rebinding","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-9739-google-chrome-sse-dns-rebinding\/","title":{"rendered":"CVE-2026-9739 &#8211; Google Chrome SSE DNS Rebinding"},"content":{"rendered":"<p>CVE ID :CVE-2026-9739<\/p>\n<p>  Published : May 27, 2026, 11:16 p.m. | 1\u00a0hour, 15\u00a0minutes ago<\/p>\n<p>  Description :Vulnerable to DNS rebinding attacks when using SSE (http:\/\/b\/499408790). During the beta phase, we implemented `allowed-origins` and `allowed-hosts` flags to align with MCP security guidelines. However, the hardcoded `Access-Control-Allow-Origin: *` header in the SSE initialization handler was inadvertently retained. This vulnerability specifically impacts users connecting via Toolbox using SSE under specification v2024-11-05.<\/p>\n<p>  Severity: 9.4 | CRITICAL<\/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-2026-9739 Published : May 27, 2026, 11:16 p.m. | 1\u00a0hour, 15\u00a0minutes ago Description :Vulnerable to DNS rebinding attacks when using SSE (http:\/\/b\/499408790). During the beta phase, we implemented `allowed-origins` and `allowed-hosts` flags to align with MCP security guidelines. However, the hardcoded `Access-Control-Allow-Origin: *` header in the SSE initialization handler was inadvertently retained. This &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-78950","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78950","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=78950"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78950\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=78950"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=78950"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=78950"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}