CVE-2026-107396
Published:October 08, 2026
Updated:October 11, 2026
Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, users who can manage events or create content, including speakers who can upload material, can store crafted javascript URLs in fields that accept custom URLs. A user who follows one of these URLs can execute attacker-controlled script in the user's browser in the Indico origin. This issue is fixed in version 3.3.13.
Affected Packages
https://github.com/indico/indico.git (GITHUB):
Affected version(s) >=v3.0rc1 <v3.3.13Fix Suggestion:
Update to version v3.3.13indico (PYTHON):
Affected version(s) >=3.0rc1 <3.3.13Fix Suggestion:
Update to version 3.3.13Related Resources (7)
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Contact UsCVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Incomplete Denylist to Cross-Site Scripting
EPSS
Base Score:
0.19