What is CVE-2026-107395?

CVE-2026-107395 is a medium-severity vulnerability in Indico, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-10-08.

How severe is CVE-2026-107395?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Indico

CVE-2026-107395

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, an authenticated user can misuse the legacy session export API to retrieve details for a restricted session without access to that session, as long as the containing event is accessible. The missing access check can disclose session metadata such as the title, description, and conveners. This issue is fixed in version 3.3.13.

Vulnerability class: Broken Access Control

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

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2026-107395?: CVE-2026-107395 is a medium-severity vulnerability in Indico, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-10-08.
How severe is CVE-2026-107395?: Medium severity. CVSS v3 base score is 4.3 out of 10.