{"id":81254,"date":"2026-06-30T01:45:22","date_gmt":"2026-06-29T22:15:22","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-8023-path-traversal-in-zephyr-http-server-static-filesystem-resource-handler-allows-unauthenticated-remote-arbitrary-file-read\/"},"modified":"2026-06-30T01:45:22","modified_gmt":"2026-06-29T22:15:22","slug":"cve-2026-8023-path-traversal-in-zephyr-http-server-static-filesystem-resource-handler-allows-unauthenticated-remote-arbitrary-file-read","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-8023-path-traversal-in-zephyr-http-server-static-filesystem-resource-handler-allows-unauthenticated-remote-arbitrary-file-read\/","title":{"rendered":"CVE-2026-8023 &#8211; Path traversal in Zephyr HTTP server static-filesystem resource handler allows unauthenticated remote arbitrary file read"},"content":{"rendered":"<p>CVE ID :CVE-2026-8023<\/p>\n<p>  Published : June 29, 2026, 10:15 p.m. | 1\u00a0hour, 30\u00a0minutes ago<\/p>\n<p>  Description :Zephyr&#8217;s HTTP server (subsys\/net\/lib\/http) provides a static-filesystem resource type (HTTP_RESOURCE_TYPE_STATIC_FS, available when CONFIG_FILE_SYSTEM is enabled) that serves files from a configured root directory. Before this fix, both the HTTP\/1 and HTTP\/2 front-ends placed the raw, attacker-controlled request path into client-url_buffer (assembled in on_url() for HTTP\/1 and copied verbatim from the :path pseudo-header for HTTP\/2) without resolving .\/.. segments. The static-FS handler then built the on-disk filename by directly concatenating the configured root with that raw URL (snprintk(fname, &#8230;, &#8220;%s%s&#8221;, static_fs_detail-fs_path, client-url_buffer) at http_server_http1.c:603 and http_server_http2.c:490) and opened it with fs_open(fname, FS_O_READ). Because the handler is reached via wildcard\/leading-dir (fnmatch FNM_LEADING_DIR) or fallback resource matching, a request such as GET \/<br \/>\n  Severity: 7.5 | 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-2026-8023 Published : June 29, 2026, 10:15 p.m. | 1\u00a0hour, 30\u00a0minutes ago Description :Zephyr&#8217;s HTTP server (subsys\/net\/lib\/http) provides a static-filesystem resource type (HTTP_RESOURCE_TYPE_STATIC_FS, available when CONFIG_FILE_SYSTEM is enabled) that serves files from a configured root directory. Before this fix, both the HTTP\/1 and HTTP\/2 front-ends placed the raw, attacker-controlled request path into client-url_buffer &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-81254","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81254","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=81254"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81254\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=81254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=81254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=81254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}