---
id: CVE-2026-107394
title: >-
  Indico is an event management system that uses Flask-Multipass, a
  multi-backend authentication system for Flask
summary: >-
  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 cra…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-918
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T20:48:36.970'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107394'
references:
  - url: >-
      https://github.com/indico/indico/commit/44540e70ab4e20a12f14ddba5218a33749a86736
    label: security-advisories@github.com
  - url: 'https://github.com/indico/indico/pull/7573'
    label: security-advisories@github.com
  - url: 'https://github.com/indico/indico/releases/tag/v3.3.13'
    label: security-advisories@github.com
  - url: 'https://github.com/indico/indico/security/advisories/GHSA-2v95-h47v-g4x9'
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107394'
  - url: 'https://github.com/advisories/GHSA-2v95-h47v-g4x9'
  - url: 'https://github.com/indico/indico'
tags:
  - nvd
  - ghsa
  - pip
  - osv
ingestedAt: '2026-10-08T21:07:56.434Z'
aliases:
  - GHSA-2v95-h47v-g4x9
ecosystem: pip
vendor: indico
product: indico
affected:
  - indico < 3.3.13
patched:
  - indico 3.3.13
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-107394)

Affected packages:

- `indico < 3.3.13`

Patched in:

- `indico 3.3.13`

Source: https://github.com/advisories/GHSA-2v95-h47v-g4x9