CVE-2026-107396

Published: Oct 8, 2026Modified: Oct 9, 2026Deferred

5.4

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Exploitability: 2.3 / Impact: 2.7

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-692

Incomplete Denylist to Cross-Site Scripting

The product uses a denylist-based protection mechanism to defend against XSS attacks, but the denylist is incomplete, allowing XSS variants to succeed.

References (4)

https://github.com/indico/indico/commit/d4c8c7127176efa4cb53c64119ca8ee2b551be18

Source: security-advisories@github.com

https://github.com/indico/indico/pull/7619

Source: security-advisories@github.com

https://github.com/indico/indico/releases/tag/v3.3.13

Source: security-advisories@github.com

https://github.com/indico/indico/security/advisories/GHSA-c4wc-ggrj-jg9v

Source: security-advisories@github.com

Timeline

No history available yet.