CVE-2005-3829: Activecampaign Knowledgebuilder

High severity, CVSS 7.8. EPSS: 1.8% chance of exploitation in the next 30 days.

index.php in ActiveCampaign KnowledgeBuilder 2.4 and earlier allows remote attackers to cause a denial of service (CPU consumption) via an invalid category parameter, which causes a large number of SQL queries to be processed.

Affected products

• Activecampaign Knowledgebuilder: version 2.4 only

Published 2005-11-26. Last modified 2026-06-16.