PaperCut SetupCompleted Auth Bypass Exploitation (CVE-2026-81578)

Ibrahim Saud@tektrix

•updated Sep 17, 2026•0•0•7

Detects anomalous process execution originating from the PaperCut application server process, specifically targeting the SetupCompleted servlet endpoint. This pattern is indicative of an exploitation attempt, such as CVE-2026-81578, where unauthenticated requests trigger backend server actions before proper access validation.