{"cve":"CVE-2026-28352","nvd":{"published":"2026-02-27T21:16:19.323","modified":"2026-06-17T10:28:27.983","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":["CWE-306"],"references":["https://github.com/indico/indico/releases/tag/v3.3.11","https://github.com/indico/indico/security/advisories/GHSA-rfpp-2hgm-gp5v"],"products":["cern:indico"],"source":"nvd","synced_at":"2026-10-19T22:24:17.937441719+00:00"},"epss":{"cve":"CVE-2026-28352","score":0.00299,"percentile":0.22662,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rfpp-2hgm-gp5v","url":"https://osv.dev/vulnerability/GHSA-rfpp-2hgm-gp5v","summary":"Indico has a missing access check in the event series management API","modified":"2026-07-13T07:26:40.672058099Z","packages":[{"ecosystem":"PyPI","name":"indico","purl":"pkg:pypi/indico","ranges":["<3.3.11"],"fixed":["3.3.11"]}]},{"id":"PYSEC-2026-2183","url":"https://osv.dev/vulnerability/PYSEC-2026-2183","summary":"","modified":"2026-07-13T07:15:33.017040143Z","packages":[{"ecosystem":"PyPI","name":"indico","purl":"pkg:pypi/indico","ranges":["<3.3.11"],"fixed":["3.3.11"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}