{"id":53657,"date":"2026-05-12T13:27:20","date_gmt":"2026-05-12T13:27:20","guid":{"rendered":"https:\/\/zero.redgem.net\/?p=53657"},"modified":"2026-05-12T13:27:20","modified_gmt":"2026-05-12T13:27:20","slug":"junoclaw-uploadwasm-accepted-arbitrary-filesystem-paths-without-validation","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=53657","title":{"rendered":"JunoClaw: upload_wasm accepted arbitrary filesystem paths without validation_CVE-2026-43989"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, the upload_wasm MCP tool accepted a filesystem path from the agent and uploaded whatever bytes the path resolved to, with no validation of location, symlink target, file size, or file format. 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Prior to 0.x.y-security-1, the upload_wasm MCP tool accepted a filesystem path from the agent and&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[6,8,44,12,15,13,7,11,5],"class_list":["post-53657","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-85","tag-exploit","tag-high","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>JunoClaw: upload_wasm accepted arbitrary filesystem paths without validation_CVE-2026-43989 - zero redgem<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zero.redgem.net\/?p=53657\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JunoClaw: upload_wasm accepted arbitrary filesystem paths without validation_CVE-2026-43989 - zero redgem\" \/>\n<meta property=\"og:description\" content=\"{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;JunoClaw is an agentic AI platform built on Juno Network. 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