CVE-2026-28352

6.5 MEDIUM
Published: February 27, 2026 Modified: March 03, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/indico/indico/releases/tag/v3.3.11
Source: security-advisories@github.com
Product Release Notes
https://github.com/indico/indico/security/advisories/GHSA-rfpp-2hgm-gp5v
Source: security-advisories@github.com
Mitigation Patch Vendor Advisory

2 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.5 / 10.0
EPSS (Exploit Probability)
0.1%
17th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

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