{"id":28452,"date":"2026-09-25T00:31:29","date_gmt":"2026-09-24T16:31:29","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-77581"},"modified":"2026-09-25T00:31:29","modified_gmt":"2026-09-24T16:31:29","slug":"cve-2026-77581","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-77581","title":{"rendered":"CVE-2026-77581 [HIGH] &#8211; BentoPDF is a client-side PDF toolkit that is self hostable. In 2.8.6 and earlier, the cer"},"content":{"rendered":"<p>BentoPDF is a client-side PDF toolkit that is self hostable. In 2.8.6 and earlier, the certificate and timestamp CORS proxy in cloudflare\/cors-proxy-worker.js uses isPrivateOrReservedHost() to validate a supplied hostname separately from the DNS resolution used by fetch(targetUrl), allowing an attacker-controlled hostname to resolve to an internal or reserved destination after validation. A certificate-like path can satisfy ALLOWED_PATH_PATTERNS, and direct clients can forge the browser-oriented Origin header. Deployments without PROXY_SECRET skip the optional signature check, while the signature is an anti-abuse measure rather than a destination-security boundary. The proxy has a 10 MB response limit and can relay response bodies from reachable destinations. The advisory identifies both the official Worker deployment and self-hosted instances as impacted where the Worker execution environment can reach internal or reserved destinations. This vulnerability is fixed in 2.8.7.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>BentoPDF is a client-side PDF toolkit that is self hostable. In 2.8.6 and earlier, the certificate and timestamp CORS proxy in cloudflare\/cors-proxy-worker.js uses isPrivateOrReservedHost() to validat<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-28452","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/28452","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=28452"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28452"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}