---
id: CVE-2026-68582
title: >-
  Vikunja versions >= 0.24.0 and <= 2.3.0 contain a broken object level
  authorization (BOLA) vulnerability in the task-collection endpoint (GET
  /api/v1/projects/{project}/views/{view}/tasks)
summary: >-
  Vikunja versions >= 0.24.0 and <= 2.3.0 contain a broken object level
  authorization (BOLA) vulnerability in the task-collection endpoint (GET
  /api/v1/projects/{project}/views/{view}/tasks). The endpoint loads the
  requested project view f…
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'
cwe:
  - CWE-639
published: '2026-08-02'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:34:34.997'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-68582'
references:
  - url: >-
      https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj9j-8772-4h6c
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/vikunja-broken-object-level-authorization-via-link-share-token
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj9j-8772-4h6c
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00357
epssPercentile: 0.26709
ingestedAt: '2026-08-02T13:18:30.149Z'
---

## Overview

Vikunja versions >= 0.24.0 and <= 2.3.0 contain a broken object level authorization (BOLA) vulnerability in the task-collection endpoint (GET /api/v1/projects/{project}/views/{view}/tasks). The endpoint loads the requested project view from the URL path without verifying the caller is authorized for it. For a link-share token holder, the task scope is pinned to the share's own project, but the view is taken from the attacker-controlled path and never re-validated. As a result, a holder of any project share link can read any other tenant's kanban bucket records — bucket titles and the full created_by user object (username, name, id) — for every view in the instance. The same missing pre-authorization view load also creates a project/view-ID existence oracle (404 vs. non-404) usable by link shares and ordinary authenticated users. Task contents remain constrained to the share's own project and are not disclosed. Fixed in 2.4.0.

## Remediation

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