Vulnerability · Published Feb 27, 2026 · Assigned by GitHub_M
CVE-2026-28352Indico missing access check in event series management API
Medium 6.5
In plain English
A medium-severity missing authentication in indico from indico. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | indico | 3.3.11 | GHSA-rfpp-2hgm-gp5v |
| PyPI | indico | 3.3.11 | PYSEC-2026-2183 |
Affected products (as reported)
Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
References
- https://github.com/indico/indico/security/advisories/GHSA-rfpp-2hgm-gp5v x_refsource_CONFIRM
- https://github.com/indico/indico/releases/tag/v3.3.11 x_refsource_MISC