---
id: CVE-2026-82411
title: >-
  Objects API: Cross-object-type authorization bypass on the object
  history-detail endpoint
summary: >-
  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
  Objec…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-639
vendor: maykinmedia
product: open-object
affected:
  - 'open-object >= 2.4.3, < 2.5.1'
  - 'open-object >= 3.0.0, < 3.6.2'
  - 'open-object >= 4.0.0-rc.1, < 4.0.2'
  - 'open-object >= 4.1.0, < 4.1.1'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-29T15:30:00.984556Z'
published: '2026-10-28'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T17:20:57.039Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-82411'
references:
  - url: >-
      https://github.com/maykinmedia/open-object/security/advisories/GHSA-55w6-rqp5-j5wx
    label: >-
      https://github.com/maykinmedia/open-object/security/advisories/GHSA-55w6-rqp5-j5wx
  - url: >-
      https://github.com/maykinmedia/open-object/commit/11c5b85ea5d1d80f940883f01b8b8ea80ccdd47c
    label: >-
      https://github.com/maykinmedia/open-object/commit/11c5b85ea5d1d80f940883f01b8b8ea80ccdd47c
  - url: >-
      https://github.com/maykinmedia/open-object/commit/27e806eff04c52ebe1e78126c288b63fc0308b52
    label: >-
      https://github.com/maykinmedia/open-object/commit/27e806eff04c52ebe1e78126c288b63fc0308b52
  - url: >-
      https://github.com/maykinmedia/open-object/commit/6154d9c2ed8c162b61f2d42db2de4eda5081347f
    label: >-
      https://github.com/maykinmedia/open-object/commit/6154d9c2ed8c162b61f2d42db2de4eda5081347f
  - url: >-
      https://github.com/maykinmedia/open-object/commit/ce6b1820619c843748bc5231597aa7fc060d95fe
    label: >-
      https://github.com/maykinmedia/open-object/commit/ce6b1820619c843748bc5231597aa7fc060d95fe
  - url: 'https://github.com/maykinmedia/open-object/tree/2.5.1'
    label: 'https://github.com/maykinmedia/open-object/tree/2.5.1'
  - url: 'https://github.com/maykinmedia/open-object/tree/3.6.2'
    label: 'https://github.com/maykinmedia/open-object/tree/3.6.2'
  - url: 'https://github.com/maykinmedia/open-object/tree/4.0.2'
    label: 'https://github.com/maykinmedia/open-object/tree/4.0.2'
  - url: 'https://github.com/maykinmedia/open-object/tree/4.1.1'
    label: 'https://github.com/maykinmedia/open-object/tree/4.1.1'
tags:
  - cve.org
epss: 0.00306
epssPercentile: 0.23555
ingestedAt: '2026-11-01T22:02:40.992Z'
---

## Overview

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.

## Affected

- `open-object >= 2.4.3, < 2.5.1`
- `open-object >= 3.0.0, < 3.6.2`
- `open-object >= 4.0.0-rc.1, < 4.0.2`
- `open-object >= 4.1.0, < 4.1.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.