PT-2026-22401 · Indico+1 · Indico+1

Lighthousekeeper1212 · Published 2026-02-27 · Updated 2026-03-01 · CVE-2026-28352

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Indico versions prior to 3.3.11

Description Indico, an event management system utilizing Flask-Multipass, contains a flaw in the API endpoint responsible for managing event series. This endpoint lacks a necessary access check, potentially allowing unauthorized access. The impact is limited to retrieving metadata (title, category chain, start/end date) for event series, deleting existing series, and modifying existing series. This does not grant unauthorized access to events themselves or allow tampering with user-visible event data. The affected API endpoint is '/api/v1/event series'.

Recommendations Update to version 3.3.11 or later. As a workaround, restrict access to the series management API endpoint using the webserver.

Exploit

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2026-28352

GHSA-RFPP-2HGM-GP5V

Affected Products

Flask-Multipass

Indico

References · 9

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28352.json · Exploit
• https://github.com/indico/indico/security/advisories/GHSA-rfpp-2hgm-gp5v · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-28352 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-rfpp-2hgm-gp5v · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-28352 · Security Note
• https://github.com/indico/indico · Note
• https://github.com/indico/indico/releases/tag/v3.3.11 · Note
• https://twitter.com/VulmonFeeds/status/2027607820040867939 · Twitter Post
• https://twitter.com/CVEnew/status/2027744235928055845 · Twitter Post