CVE-2026-82411

Open Object provides an API and admin interface to manage objects and object types. From 2.4.3 until 2.5.1, 3.6.2, 4.0.2, and 4.1.1, a token scoped to read one ObjectType can read the full versioned record of an object of any other ObjectType via the history-detail endpoint `GET /api/v2/objects/{uuid}/{index}`. The `history_detail` action in `src/objects/api/v2/views.py` calls `self.get_queryset()` and `get_object_or_404` directly instead of `self.get_object()`, so `check_object_permissions` and the per-object check in `ObjectTypeBasedPermission.has_object_permission` are not invoked. The queryset's `filter_for_token` applies only to the list and search actions, while `ObjectTypeBasedPermission.has_permission` allows non-create actions, leaving neither check to constrain history-detail records to the token's permitted ObjectType. The normal retrieve endpoint returns 403 for the same unauthorized object, and the sibling history action enforces the grant. Any valid non-superuser API token with a read grant on at least one ObjectType can therefore disclose another ObjectType's complete versioned object `data`, which can include citizen or case records and sensitive identifiers in government deployments. This issue is fixed in versions 2.5.1, 3.6.2, 4.0.2, and 4.1.1.

• CWE-639

• https://github.com/maykinmedia/open-object/commit/11c5b85ea5d1d80f940883f01b8b8ea80ccdd47c
• https://github.com/maykinmedia/open-object/commit/27e806eff04c52ebe1e78126c288b63fc0308b52
• https://github.com/maykinmedia/open-object/commit/6154d9c2ed8c162b61f2d42db2de4eda5081347f
• https://github.com/maykinmedia/open-object/commit/ce6b1820619c843748bc5231597aa7fc060d95fe
• https://github.com/maykinmedia/open-object/security/advisories/GHSA-55w6-rqp5-j5wx
• https://github.com/maykinmedia/open-object/tree/2.5.1
• https://github.com/maykinmedia/open-object/tree/3.6.2
• https://github.com/maykinmedia/open-object/tree/4.0.2
• https://github.com/maykinmedia/open-object/tree/4.1.1

Published

Oct 28, 2026

Last Modified

Oct 29, 2026

Status

Deferred

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