{"cve":"CVE-2026-35595","nvd":{"published":"2026-04-10T17:17:02.910","modified":"2026-10-26T21:10:00.170","status":"Analyzed","description":"Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CanUpdate check at pkg/models/project_permissions.go:139-148 only requires CanWrite on the new parent project when changing parent_project_id. However, Vikunja's permission model uses a recursive CTE that walks up the project hierarchy to compute permissions. Moving a project under a different parent changes the permission inheritance chain. When a user has inherited Write access (from a parent project share) and reparents the child project under their own project tree, the CTE resolves their ownership of the new parent as Admin (permission level 2) on the moved project. This vulnerability is fixed in 2.3.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","score":8.3},"cwes":["CWE-269"],"references":["https://github.com/go-vikunja/vikunja/commit/c03d682f48aff890eeb3c8b41d38226069722827","https://github.com/go-vikunja/vikunja/pull/2583","https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0","https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2vq4-854f-5c72"],"products":["vikunja:vikunja"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-35595","score":0.0029,"percentile":0.21394,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-2vq4-854f-5c72","url":"https://osv.dev/vulnerability/GHSA-2vq4-854f-5c72","summary":"Vikunja vulnerable to Privilege Escalation via Project Reparenting","modified":"2026-06-08T20:08:25Z","packages":[{"ecosystem":"Go","name":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","ranges":["<2.3.0"],"fixed":["2.3.0"]}]},{"id":"GO-2026-4952","url":"https://osv.dev/vulnerability/GO-2026-4952","summary":"Vikunja vulnerable to Privilege Escalation via Project Reparenting in code.vikunja.io/api","modified":"2026-05-20T19:30:11.535599279Z","packages":[{"ecosystem":"Go","name":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}