CVE-2026-28503 Tandoor Recipes has Cross-Space IDOR in SyncViewSet.query_synced_folder: missing space scoping on get_object_or_404

Medium 5.5 Published 26 Mar 2026 Updated 27 Mar 2026

An admin in one space can trigger sync operations and view logs for another space due to missing space scoping in the API.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-28503?

CVE-2026-28503 is a medium-severity missing authorization vulnerability in TandoorRecipes recipes, published on 26 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Tandoor Recipes is an application for managing recipes, planning meals, and building shopping lists. In versions prior to 2.6.0, the `SyncViewSet.query_synced_folder()` action in `cookbook/views/api.py` (line 903) fetches a Sync object using `get_object_or_404(Sync, pk=pk)` without including `space=request.space` in the filter. This allows an admin user in Space A to trigger sync operations (Dropbox/Nextcloud/Local import) on Sync configurations belonging to Space B, and view the resulting sync logs. Version 2.6.0 patches the issue.

Weakness: CWE-639

Which versions are affected by CVE-2026-28503?

It affects 1 product.

Products include Tandoor Recipes.

How do I fix CVE-2026-28503?

No fix has been published for CVE-2026-28503 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-28503 being exploited?

There is no known exploitation of CVE-2026-28503 in the wild and no public exploit code.

Sources

Also known as GHSA-6qpw-gwcq-68fv.