Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. In versions prior to 3.3.11, the API endpoint used to manage event series is missing an access check, allowing unauthenticated/unauthorized access to this endpoint. The impact of this is limited to getting the metadata (title, category chain, start/end date) for events in an existing series, deleting an existing event series, and modifying an existing event series. This vulnerability does NOT allow unauthorized access to events (beyond the basic metadata mentioned above), nor any kind of tampering with user-visible data in events. Version 3.3.11 fixes the issue. As a workaround, use the webserver to restrict access to the series management API endpoint.
History

Tue, 03 Mar 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 03 Mar 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Cern
Cern indico
CPEs cpe:2.3:a:cern:indico:*:*:*:*:*:*:*:*
Vendors & Products Cern
Cern indico

Mon, 02 Mar 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Indico
Indico indico
Vendors & Products Indico
Indico indico

Fri, 27 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
Description Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. In versions prior to 3.3.11, the API endpoint used to manage event series is missing an access check, allowing unauthenticated/unauthorized access to this endpoint. The impact of this is limited to getting the metadata (title, category chain, start/end date) for events in an existing series, deleting an existing event series, and modifying an existing event series. This vulnerability does NOT allow unauthorized access to events (beyond the basic metadata mentioned above), nor any kind of tampering with user-visible data in events. Version 3.3.11 fixes the issue. As a workaround, use the webserver to restrict access to the series management API endpoint.
Title Indico missing access check in event series management API
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-02-27T21:01:45.740Z

Updated: 2026-03-03T20:29:18.718Z

Reserved: 2026-02-26T18:38:13.890Z

Link: CVE-2026-28352

cve-icon Vulnrichment

Updated: 2026-03-03T20:29:15.850Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-27T21:16:19.323

Modified: 2026-03-03T18:31:21.570

Link: CVE-2026-28352

cve-icon Redhat

No data.