{"id":82774,"date":"2026-07-31T05:46:29","date_gmt":"2026-07-31T02:16:29","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-14540-server-side-request-forgery-via-unrestricted-http-redirection-in-mcp-toolbox\/"},"modified":"2026-07-31T05:46:29","modified_gmt":"2026-07-31T02:16:29","slug":"cve-2026-14540-server-side-request-forgery-via-unrestricted-http-redirection-in-mcp-toolbox","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-14540-server-side-request-forgery-via-unrestricted-http-redirection-in-mcp-toolbox\/","title":{"rendered":"CVE-2026-14540 &#8211; Server-Side Request Forgery via Unrestricted HTTP Redirection in MCP Toolbox"},"content":{"rendered":"<p>CVE ID :CVE-2026-14540<\/p>\n<p>  Published : July 31, 2026, 2:16 a.m. | 1\u00a0hour, 29\u00a0minutes ago<\/p>\n<p>  Description :A Server-Side Request Forgery (SSRF) vulnerability exists in the generic HTTP source and tool components of Google mcp-toolbox versions 0.3.0 through 1.4.0. While the toolbox implements baseline input sanitization for user-controlled parameters, the underlying HTTP client (internal\/sources\/http\/http.go) fails to safely regulate request redirection boundaries. Specifically, the client is initialized without a restrictive CheckRedirect policy hook and lacks target IP validation. An attacker or a malicious data-driven prompt can supply a crafted path parameter that triggers an open redirect or a direct destination swap on the target backend, coercing the mcp-toolbox into blindly following the redirection and making unauthorized requests to internal or arbitrary external endpoints.<\/p>\n<p>  Severity: 8.0 | 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-2026-14540 Published : July 31, 2026, 2:16 a.m. | 1\u00a0hour, 29\u00a0minutes ago Description :A Server-Side Request Forgery (SSRF) vulnerability exists in the generic HTTP source and tool components of Google mcp-toolbox versions 0.3.0 through 1.4.0. While the toolbox implements baseline input sanitization for user-controlled parameters, the underlying HTTP client (internal\/sources\/http\/http.go) fails to safely &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-82774","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82774","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=82774"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82774\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82774"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82774"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}