What is CVE-2026-107396?

CVE-2026-107396 is a medium-severity vulnerability in Indico, classified under CWE-692. CVSS score: 5.4/10. Published 2026-10-08.

How severe is CVE-2026-107396?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Indico

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.

Published 2026-10-08 · last modified 2026-10-09.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Indico — versions < 3.3.13

Weakness classification (CWE)

CWE-692

References

Frequently asked questions

What is CVE-2026-107396?: CVE-2026-107396 is a medium-severity vulnerability in Indico, classified under CWE-692. CVSS score: 5.4/10. Published 2026-10-08.
How severe is CVE-2026-107396?: Medium severity. CVSS v3 base score is 5.4 out of 10.