{"id":33896,"date":"2026-10-07T04:31:49","date_gmt":"2026-10-06T20:31:49","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-103009"},"modified":"2026-10-07T04:31:49","modified_gmt":"2026-10-06T20:31:49","slug":"cve-2026-103009","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-103009","title":{"rendered":"CVE-2026-103009 [HIGH] &#8211; Authorization Bypass Through User-Controlled Key (CWE-639) in Elasticsearch can lead to In"},"content":{"rendered":"<p>Authorization Bypass Through User-Controlled Key (CWE-639) in Elasticsearch can lead to Information Disclosure via a specially crafted cross-cluster search request that references an unauthorized shard identifier. Elasticsearch contains an authorization bypass weakness in its handling of cross-cluster search requests made through the Remote Cluster Security (RCS) 2.0 model. An authorization check validates a request against one identifying attribute of the target shard, while a separate, independently-supplied identifying attribute in the same request determines which shard is actually accessed. A holder of a cross-cluster API key authorized for one index can craft a request whose two identifying attributes refer to different indices, causing the request to be authorized against an index they can access while actually operating against a different, unauthorized index. This can expose that index&#8217;s document contents, field mappings, and other metadata, and in limited cases allows modification of retention-lease state on the unauthorized index.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Authorization Bypass Through User-Controlled Key (CWE-639) in Elasticsearch can lead to Information Disclosure via a specially crafted cross-cluster search request that references an unauthorized shar<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-33896","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/33896","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=33896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=33896"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=33896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}