CVE-2026-107394 — Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask.
Description
Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, the previous fix for CVE-2026-25738 did not cover an edge case, allowing an event organizer to submit a crafted URL that points to a prohibited local target but is accepted as valid by Indico. The organizer can read data returned by the target through affected Indico features. This issue is fixed in version 3.3.13.
CVSS v3.1 base metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:NMedium severity
Band computed from the CVSS base score, not the source's own label — so it means the same thing across every feed.
AV
Network
Attack Vector
AC
Low
Attack Complexity
PR
High
Privileges Required
UI
None
User Interaction
S
Changed
Scope
C
High
Confidentiality
I
None
Integrity
A
None
Availability
References
- advisory[email protected]https://github.com/indico/indico/commit/44540e70ab4e20a12f14ddba5218a33749a86736
- advisory[email protected]https://github.com/indico/indico/pull/7573
- advisory[email protected]https://github.com/indico/indico/releases/tag/v3.3.13
- advisory[email protected]https://github.com/indico/indico/security/advisories/GHSA-2v95-h47v-g4x9
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