CVE-2026-107396

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.

CVSS 3.1

5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-25)

CWE

CWE-692

Published

2026-10-08

Modified

2026-10-09

Record from

the NVD, synced 2026-10-19

Packages (OSV)

References

• https://github.com/indico/indico/commit/d4c8c7127176efa4cb53c64119ca8ee2b551be18
• https://github.com/indico/indico/pull/7619
• https://github.com/indico/indico/releases/tag/v3.3.13
• https://github.com/indico/indico/security/advisories/GHSA-c4wc-ggrj-jg9v

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