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Medium · 5.4 CVE-2026-107396 EUVD-2026-95214GHSA-c4wc-ggrj-jg9vPYSEC-2026-4227

Indico: Cross-Site-Scripting in link fields

Published Oct 8, 2026 · Updated Oct 9, 2026 · Assigned by GitHub_M

Description

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 products

VendorProductAffectedFixed
indico indico < 3.3.13 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI indico < 3.3.13 3.3.13 GHSA-c4wc-ggrj-jg9v

References