{"id":44566,"date":"2026-10-23T00:37:58","date_gmt":"2026-10-22T16:37:58","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-93471"},"modified":"2026-10-23T00:37:58","modified_gmt":"2026-10-22T16:37:58","slug":"cve-2026-93471","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-93471","title":{"rendered":"CVE-2026-93471 &#8211; Improper Handling of Highly Compressed Data (Data Amplification) in esaml_binding in dropb"},"content":{"rendered":"<p>Improper Handling of Highly Compressed Data (Data Amplification) in esaml_binding in dropbox esaml allows an unauthenticated attacker to exhaust server memory and crash the Erlang VM via a crafted compressed SAMLResponse.<\/p>\n<p>esaml_binding:decode_response\/2 base64-decodes the attacker-supplied SAMLResponse, inflates it with zlib:unzip\/1 with no bound on the output, then converts the result to a charlist with binary_to_list\/1 before parsing. This runs on the SAML consume (ACS) and single-logout endpoints, which accept unauthenticated requests by design, and it runs before any signature check. A small deflate stream reaches a compression ratio near 1000 to 1, so a request body of tens of kilobytes inflates to hundreds of megabytes and then to several gigabytes of list heap, so a few requests exhaust memory and take the node down.<\/p>\n<p>This issue affects esaml: from 0.1.0 onward.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Improper Handling of Highly Compressed Data (Data Amplification) in esaml_binding in dropbox esaml allows an unauthenticated attacker to exhaust server memory and crash the Erlang VM via a crafted com<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-44566","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/44566","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=44566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=44566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=44566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}