{"id":78304,"date":"2026-05-12T02:50:21","date_gmt":"2026-05-11T23:20:21","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-43901-wireshark-mcp-arbitrary-file-write-via-export_objects-when-wireshark_mcp_allowed_dirs-is-not-configured\/"},"modified":"2026-05-12T02:50:21","modified_gmt":"2026-05-11T23:20:21","slug":"cve-2026-43901-wireshark-mcp-arbitrary-file-write-via-export_objects-when-wireshark_mcp_allowed_dirs-is-not-configured","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-43901-wireshark-mcp-arbitrary-file-write-via-export_objects-when-wireshark_mcp_allowed_dirs-is-not-configured\/","title":{"rendered":"CVE-2026-43901 &#8211; Wireshark MCP: Arbitrary file write via export_objects when WIRESHARK_MCP_ALLOWED_DIRS is not configured"},"content":{"rendered":"<p>CVE ID :CVE-2026-43901<\/p>\n<p>  Published : May 11, 2026, 11:20 p.m. | 2\u00a0hours, 37\u00a0minutes ago<\/p>\n<p>  Description :Wireshark MCP is an MCP Server that turns tshark into a structured analysis interface, then layers in optional Wireshark suite utilities. In 1.1.5 and earlier, wireshark-mcp exposes a wireshark_export_objects MCP tool that accepts an attacker-controlled dest_dir parameter and passes it to tshark&#8217;s &#8211;export-objects flag with no mandatory path restriction. The path sandbox (_allowed_dirs) is None by default and only activates when the environment variable WIRESHARK_MCP_ALLOWED_DIRS is explicitly set. In a default installation, any directory on the filesystem can be used as the export destination.<\/p>\n<p>  Severity: 6.8 | 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-2026-43901 Published : May 11, 2026, 11:20 p.m. | 2\u00a0hours, 37\u00a0minutes ago Description :Wireshark MCP is an MCP Server that turns tshark into a structured analysis interface, then layers in optional Wireshark suite utilities. In 1.1.5 and earlier, wireshark-mcp exposes a wireshark_export_objects MCP tool that accepts an attacker-controlled dest_dir parameter and passes it &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-78304","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78304","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=78304"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78304\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=78304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=78304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=78304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}