{"id":29568,"date":"2026-09-26T08:32:36","date_gmt":"2026-09-26T00:32:36","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-91768"},"modified":"2026-09-26T08:32:36","modified_gmt":"2026-09-26T00:32:36","slug":"cve-2026-91768","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-91768","title":{"rendered":"CVE-2026-91768 [MEDIUM] &#8211; The IPv6 branch of the FastCGI client access check compares only the first 12 bytes of a 1"},"content":{"rendered":"<p>The IPv6 branch of the FastCGI client access check compares only the first 12 bytes of a 16-byte IPv6 address, so listen.allowed_clients matches on a \/96 prefix instead of the exact address. An attacker who can source an address sharing the first 96 bits with an allowed one passes the check and reaches the FastCGI endpoint.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The IPv6 branch of the FastCGI client access check compares only the first 12 bytes of a 16-byte IPv6 address, so listen.allowed_clients matches on a \/96 prefix instead of the exact address. An attack<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-29568","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/29568","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=29568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}