GHSA-p4r4-8cxw-pjx7
Suggest an improvement- Source
- https://github.com/advisories/GHSA-p4r4-8cxw-pjx7
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-p4r4-8cxw-pjx7/GHSA-p4r4-8cxw-pjx7.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-p4r4-8cxw-pjx7
- Withdrawn
- 2026-10-09T20:42:24Z
- Published
- 2026-08-02T15:30:21Z
- Modified
- 2026-10-09T21:00:05Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
- Summary
- Duplicate Advisory: Vikunja: Link-share token reads any tenant's kanban buckets and enumerates usernames/IDs instance-wide (BOLA)
- Details
-
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-rj9j-8772-4h6c. This link is maintained to preserve external references.
Original Description
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.
- Database specific
{ "cwe_ids": [ "CWE-639" ], "github_reviewed": true, "github_reviewed_at": "2026-10-09T20:42:24Z", "nvd_published_at": "2026-08-02T13:16:54Z", "severity": "CRITICAL" }- References
Affected packages
Go / code.vikunja.io/api
Package
- Name
- code.vikunja.io/api
- View open source insights on deps.dev
- Purl
- pkg:golang/code.vikunja.io/api