CVE-2026-40083: Cacti: SQL Injection in managers.php

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have SQL Injection through unsanitized unserialize+implode in managers.php. At line 756 of managers.php, the application assigns $selecteditems by calling cactiunserialize(stripslashes(gnrv('selectedgraphsarray'))). The cactiunserialize() function calls unserialize() with allowedclasses set to false, which prevents object injection but still allows arbitrary string arrays to be deserialized. Then, at lines 760 to 766, the deserialized array values are passed directly into dbexecute('DELETE FROM snmpagentmanagers WHERE id IN (' . implode(',', $selecteditems) . ')'), where they are imploded into the SQL statement without any integer validation, resulting in SQL Injection when using SNMP agent management permissions. This issue has been fixed in version 1.2.31.