CVE-2026-28352
Indico missing access check in event series management API
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.
INFO
Published Date :
Feb. 27, 2026, 9:16 p.m.
Last Modified :
March 3, 2026, 6:31 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Indico to version 3.3.11.
- Alternatively, restrict access to the series management API endpoint at the webserver level.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-28352.
| URL | Resource |
|---|---|
| https://github.com/indico/indico/releases/tag/v3.3.11 | Product Release Notes |
| https://github.com/indico/indico/security/advisories/GHSA-rfpp-2hgm-gp5v | Mitigation Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-28352 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-28352
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-28352 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-28352 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 03, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:cern:indico:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.11 Added Reference Type GitHub, Inc.: https://github.com/indico/indico/releases/tag/v3.3.11 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/indico/indico/security/advisories/GHSA-rfpp-2hgm-gp5v Types: Mitigation, Patch, Vendor Advisory -
New CVE Received by [email protected]
Feb. 27, 2026
Action Type Old Value New Value 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Added CWE CWE-306 Added Reference https://github.com/indico/indico/releases/tag/v3.3.11 Added Reference https://github.com/indico/indico/security/advisories/GHSA-rfpp-2hgm-gp5v