{"id":22362,"date":"2026-09-15T04:30:45","date_gmt":"2026-09-14T20:30:45","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-54156"},"modified":"2026-09-15T04:30:45","modified_gmt":"2026-09-14T20:30:45","slug":"cve-2026-54156","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-54156","title":{"rendered":"CVE-2026-54156 [HIGH] &#8211; node-opcua is an OPC UA implementation for TypeScript and Node.js. Prior to 2.166.0, the p"},"content":{"rendered":"<p>node-opcua is an OPC UA implementation for TypeScript and Node.js. Prior to 2.166.0, the process-global g_alreadyUsedNonce cache used by nonceAlreadyBeenUsed in packages\/node-opcua-secure-channel\/source\/server\/server_secure_channel_layer.ts records nonces from OpenSecureChannelRequest and CreateSession without expiration or a size limit. An unauthenticated remote attacker can repeatedly create sessions with unique nonces, causing entries to persist after session expiry and accumulate across connection cycles even when maxSessions=10 limits concurrent sessions. The resulting unbounded heap growth can exhaust the default Node.js heap and crash the node-opcua server process. This issue is fixed in version 2.166.0.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>node-opcua is an OPC UA implementation for TypeScript and Node.js. Prior to 2.166.0, the process-global g_alreadyUsedNonce cache used by nonceAlreadyBeenUsed in packages\/node-opcua-secure-channel\/sour<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-22362","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/22362","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=22362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=22362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=22362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}