{"id":28253,"date":"2026-09-24T08:31:37","date_gmt":"2026-09-24T00:31:37","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-67219"},"modified":"2026-09-24T08:31:37","modified_gmt":"2026-09-24T00:31:37","slug":"cve-2026-67219","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-67219","title":{"rendered":"CVE-2026-67219 &#8211; RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4"},"content":{"rendered":"<p>RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, add_binding\/3 parses the routing key as an integer weight N and computes ring positions with lists:seq(NextN0, NextN0 + N &#8211; 1). validate_binding\/2 only checks N &gt;= 1 , no upper bound. The resulting list is stored in the exchange&#8217;s Khepri record, replicated cluster-wide, and reloaded on restart. A user with write permission on a consistent-hash exchange and read on a queue can create a binding whose routing key (the hash-ring weight) is an arbitrarily large integer. The broker allocates a list of that many integers via lists:seq\/2 and persists it to Khepri across all cluster nodes , a single binding with weight 100000000 allocates ~800 MB on every node and survives restarts. Preconditions include rabbitmq_consistent_hash_exchange plugin enabled write permission on a consistent-hash exchange + read on a queue (standard binding perms). This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, add_binding\/3 parses the routing key as an integer weight N and computes ring positions with <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-28253","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/28253","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=28253"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28253"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28253"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}