CVE-2026-113349
Published:October 20, 2026
Updated:November 06, 2026
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.
Affected Packages
https://github.com/opencats/OpenCATS.git (GITHUB):
Affected version(s) >=0.9.1a <v0.10.0 || >=opencats-0.9.3 <v0.10.0 || =opencats-0.9.3(alpha) <v0.10.0 || =opencats-0.9.3(final) <v0.10.0 || =v0.9.7.2 <v0.10.0Fix Suggestion:
Update to version v0.10.0Related Resources (10)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Authorization Bypass Through User-Controlled Key
EPSS
Base Score:
0.26