{"id":12453,"date":"2026-09-04T18:59:24","date_gmt":"2026-09-04T10:59:24","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-14198"},"modified":"2026-09-04T18:59:24","modified_gmt":"2026-09-04T10:59:24","slug":"cve-2026-14198","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-14198","title":{"rendered":"CVE-2026-14198 [CRITICAL] &#8211; @fastify\/middie versions 9.1.0 through 9.3.2 decode the encoded slash %2F inside path para"},"content":{"rendered":"<p>@fastify\/middie versions 9.1.0 through 9.3.2 decode the encoded slash %2F inside path parameter values before matching middleware paths, while Fastify&#8217;s underlying router preserves the encoding during route lookup. The two layers disagree on the canonical request path, so the middleware fails to match a URL that the route handler does match. When middleware is used for authentication, authorization, rate limiting, or auditing on parameterized paths, an attacker can reach the protected handler by sending a single crafted URL with an encoded slash in the parameter position. The bypass is HTTP method agnostic and requires no authentication or special preconditions. Patches: upgrade to @fastify\/middie 9.3.3. Workarounds: avoid parameterized middleware paths for security decisions, or enforce authentication at the route handler or via a Fastify hook that runs after the router has resolved the request.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>@fastify\/middie versions 9.1.0 through 9.3.2 decode the encoded slash %2F inside path parameter values before matching middleware paths, while Fastify&#8217;s underlying router preserves the encoding during<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-12453","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/12453","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}