{"id":"GHSA-p4r4-8cxw-pjx7","revision":"902d8455fddb4ddcab52ce20f40acedf","records":[{"revision":"902d8455fddb4ddcab52ce20f40acedf","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-p4r4-8cxw-pjx7","aliases":[],"title":"Duplicate Advisory: Vikunja: Link-share token reads any tenant's kanban buckets and enumerates usernames/IDs instance-wide (BOLA)","description":"### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-rj9j-8772-4h6c. This link is maintained to preserve external references.\n\n### Original Description\nVikunja 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.","state":2,"publishedAt":"2026-08-02T15:30:21+00:00","modifiedAt":"2026-10-09T21:00:05.4186322+00:00","affected":[{"ecosystem":"Go","name":"code.vikunja.io/api","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.24.0"},{"kind":"last_affected","version":"2.3.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":null,"severity":null},{"system":"CVSS_V4","vector":"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","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"CRITICAL"}],"references":["https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj9j-8772-4h6c","https://nvd.nist.gov/vuln/detail/CVE-2026-68582","https://www.vulncheck.com/advisories/vikunja-broken-object-level-authorization-via-link-share-token"],"sourceUrl":"https://github.com/advisories/GHSA-p4r4-8cxw-pjx7","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-p4r4-8cxw-pjx7","identifiers":["GHSA-p4r4-8cxw-pjx7"]},"retained":false,"historicalAffected":[]}],"coverage":[]}