{"id":82052,"date":"2026-07-16T00:46:55","date_gmt":"2026-07-15T21:16:55","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-62312-9router-authenticated-rce-via-unvalidated-mcp-plugin-arguments\/"},"modified":"2026-07-16T00:46:55","modified_gmt":"2026-07-15T21:16:55","slug":"cve-2026-62312-9router-authenticated-rce-via-unvalidated-mcp-plugin-arguments","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-62312-9router-authenticated-rce-via-unvalidated-mcp-plugin-arguments\/","title":{"rendered":"CVE-2026-62312 &#8211; 9Router: Authenticated RCE via Unvalidated MCP Plugin Arguments"},"content":{"rendered":"<p>CVE ID :CVE-2026-62312<\/p>\n<p>  Published : July 15, 2026, 9:16 p.m. | 17\u00a0minutes ago<\/p>\n<p>  Description :9Router is an AI router &amp; token saver. Prior to 0.5.2, 9Router allows a remote authenticated attacker to achieve arbitrary code execution on the host operating system by combining a Host header bypass of localhost-only routes with unvalidated MCP plugin args passed to child_process.spawn(), allowing malicious custom plugins to execute commands through \/api\/mcp\/\/sse. This issue is fixed in version 0.5.2.<\/p>\n<p>  Severity: 8.8 | HIGH<\/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-2026-62312 Published : July 15, 2026, 9:16 p.m. | 17\u00a0minutes ago Description :9Router is an AI router &amp; token saver. Prior to 0.5.2, 9Router allows a remote authenticated attacker to achieve arbitrary code execution on the host operating system by combining a Host header bypass of localhost-only routes with unvalidated MCP plugin args &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-82052","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82052","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=82052"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82052\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82052"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82052"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82052"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}