🛡️ CVE-2026-28352 — indico

🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-306 OSV
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Indico has a missing access check in the event series management API

Impact

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: This just removes the series metadata, ie (if enabled) the links between events in the same series and the lecture series number in the event title
  • Modifying an existing event series: Just like for deleting, it would only allow to toggle the metadata display. It could also be used to set an event title pattern for the series, but this is only used when cloning an event from that series.

That 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.

Patches

Developers should to update to [Indico 3.3.11](https://github.com/indico/indico/releases/tag/v3.3.11) as soon as possible.

See [the docs](https://docs.getindico.io/en/stable/installation/upgrade/) for instructions on how to update.

Workarounds

  • Developers can configure their webserver to restrict access to the series management API endpoint

For more information

If there are any questions or comments about this advisory:

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability none.

Weakness class

CVE-2026-28352 is classified as CWE-306: Missing Authentication for Critical Function. A sensitive function can be reached without authenticating at all.

Affected software

CVE-2026-28352 is recorded against 1 package.

  • indico (fixed in 3.3.11)

Timeline and source

Published on 1 March 2026 and last revised on 13 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Package)
github.com (Web)

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE CWE-306
Public Exploit ✅ No
Source OSV
Published 2026-03-01
Updated 2026-08-12
Modified 2026-07-13

Affected Packages

Software From version Fixed in
indico — 3.3.11

Similar Threats

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