CVE-2026-68582

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj9j-8772-4h6c
https://www.vulncheck.com/advisories/vikunja-broken-object-level-authorization-via-link-share-token
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj9j-8772-4h6c

Configurations

No configuration.

History

03 Aug 2026, 20:17

Type	Values Removed	Values Added
References	~~() https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj9j-8772-4h6c -~~	() https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj9j-8772-4h6c -

02 Aug 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-08-02 13:16

Updated : 2026-08-03 20:17

NVD link : CVE-2026-68582

Mitre link : CVE-2026-68582

CVE.ORG link : CVE-2026-68582

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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