{"id":243295,"date":"2026-08-28T01:25:51","date_gmt":"2026-08-28T06:25:51","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/08\/next-js-patches-critical-avif-and-windows-flaws-enabling-unauthenticated-rce"},"modified":"2026-08-28T01:25:51","modified_gmt":"2026-08-28T06:25:51","slug":"next-js-patches-critical-avif-and-windows-flaws-enabling-unauthenticated-rce","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/08\/next-js-patches-critical-avif-and-windows-flaws-enabling-unauthenticated-rce","title":{"rendered":"Next.js Patches Critical AVIF and Windows Flaws Enabling Unauthenticated RCE"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/next-js-patches-critical-avif-and-windows-flaws-enabling-unauthenticated-rce.gif\"><\/a><\/p>\n<p>Vercel has released security patches for two critical-severity vulnerabilities in the Next.js web framework, both of which allow unauthenticated remote code execution, one exploitable via specially crafted AVIF image files and the other through a path traversal flaw affecting servers that use a Windows filesystem.<\/p>\n<p>The Windows path traversal, tracked as <strong>CVE-2026\u201375604<\/strong> (CVSS score: 9.0), affects Next.js applications that use both the Pages Router and App Router without Cache Components when the server uses a Windows filesystem.<\/p>\n<p>Linux and macOS deployments are not affected.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vercel has released security patches for two critical-severity vulnerabilities in the Next.js web framework, both of which allow unauthenticated remote code execution, one exploitable via specially crafted AVIF image files and the other through a path traversal flaw affecting servers that use a Windows filesystem. The Windows path traversal, tracked as CVE-2026\u201375604 (CVSS score: 9.0), [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1523,1492],"tags":[],"class_list":["post-243295","post","type-post","status-publish","format-standard","hentry","category-computing","category-security"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/243295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=243295"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/243295\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=243295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=243295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=243295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}