Is CVE-2026-113349 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-113349?

CVE-2026-113349 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-113349

Description

OpenCATS before 0.10.0 contains a missing authorization vulnerability in CalendarUI::onEditEvent() and onDeleteEvent() that allows authenticated users to modify or delete other users' calendar events. Attackers with EDIT or DELETE access can supply arbitrary eventID values to alter or remove any user's events, including non-public ones restricted to their owner.