{"id":39222,"date":"2026-10-16T00:35:17","date_gmt":"2026-10-15T16:35:17","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-91184"},"modified":"2026-10-16T00:35:17","modified_gmt":"2026-10-15T16:35:17","slug":"cve-2026-91184","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-91184","title":{"rendered":"CVE-2026-91184 [HIGH] &#8211; Description\n\nNGINX Gateway Fabric\u00a0has a vulnerability when it renders the spec.basic.realm"},"content":{"rendered":"<p>Description<\/p>\n<p>NGINX Gateway Fabric\u00a0has a vulnerability when it renders the spec.basic.realm (and spec.jwt.realm) field of a namespaced AuthenticationFilter verbatim, unescaped and unvalidated, into the shared data-plane nginx.conf as auth_basic &#8220;&#8221;;. A namespaced authenticated attacker that configures AuthenticationFilter CRD to an HTTPRoute\/GRPCRoute on a shared Gateway can craft a realm value that closes the quoted directive and the enclosing location {} block and injects arbitrary NGINX directives into that Gateway&#8217;s data-plane config.\u00a0<\/p>\n<p>Impact<\/p>\n<p>A remote authenticated attacker can send crafted requests to configure NGINX Gateway Fabric\u00a0AuthenticationFilter CRD and\u00a0may be able to read every co-located tenant&#8217;s mounted secrets, SSRF via proxy_pass, reading the pod ServiceAccount token, or hijacking other tenants&#8217; routes.\u00a0There is no data plane exposure; this is a control plane issue only.<\/p>\n<p>Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description<\/p>\n<p>NGINX Gateway Fabric\u00a0has a vulnerability when it renders the spec.basic.realm (and spec.jwt.realm) field of a namespaced AuthenticationFilter verbatim, unescaped and unvalidated, into the<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-39222","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/39222","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=39222"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=39222"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=39222"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}