CVE-2026-28352 json
Indico missing access check in event series management API
published 2026-02-27 8 mo ago modified 2026-07-13 3 mo ago also GHSA-rfpp-2hgm-gp5v , PYSEC-2026-2183 , EUVD-2026-9071
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi indico 3.3.11
- cern indico 3.3.11
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 8 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | indico | <3.3.11 |
3.3.11 |
Affected products
- indico indico
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
github.com
/indico/indico/security/advisories/GHSA-rfpp-2hgm-gp5v
web, mitigation, patch, vendor-advisory
-
github.com
/indico/indico/releases/tag/v3.3.11
web, product, release-notes, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-28352
advisory
-
github.com
/indico/indico
package
Sources
- CVE List CVE-2026-28352
- GitHub Advisory GHSA-rfpp-2hgm-gp5v
- NVD CVE-2026-28352
- OSV PYSEC-2026-2183
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