{"cve":"CVE-2026-54766","nvd":{"published":"2026-08-28T20:18:17.803","modified":"2026-09-09T21:09:13.080","status":"Deferred","description":"Vikunja is an open-source self-hosted task management platform. From 0.21.0 until 2.4.0, the project duplication operation in pkg/models/project_duplicate.go allows an authenticated user who can read a source project to place its duplicate beneath an arbitrary target parent project. ProjectDuplicate.CanCreate calls parent.CanCreate on an unhydrated Project containing only the body supplied parent_project_id instead of calling parent.CanWrite, so the target parent write-permission check is skipped. The ordinary project creation path enforces that permission, but PUT /api/v1/projects/{project}/duplicate does not, allowing attacker-owned content to be injected into another user or team project hierarchy. This issue is fixed in version 2.4.0.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N","score":5.3},"cvss_v3":null,"cwes":["CWE-285","CWE-863"],"references":["https://github.com/go-vikunja/vikunja/commit/d911caaa11c748c3abc6b98b3189afea2677bcb0","https://github.com/go-vikunja/vikunja/pull/3239","https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0","https://github.com/go-vikunja/vikunja/security/advisories/GHSA-f27p-pw2p-9pr4","https://github.com/go-vikunja/vikunja/security/advisories/GHSA-f27p-pw2p-9pr4"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:50.842544443+00:00"},"epss":{"cve":"CVE-2026-54766","score":0.00427,"percentile":0.37017,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-f27p-pw2p-9pr4","url":"https://osv.dev/vulnerability/GHSA-f27p-pw2p-9pr4","summary":"Vikunja has a project duplication bypasses write-permission check on the target parent project","modified":"2026-09-02T19:55:46.453854844Z","packages":[{"ecosystem":"Go","name":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","ranges":[">=0.21.0 <2.4.0"],"fixed":["2.4.0"]}]},{"id":"GO-2026-6311","url":"https://osv.dev/vulnerability/GO-2026-6311","summary":"Vikunja has a project duplication bypasses write-permission check on the target parent project in code.vikunja.io/api","modified":"2026-09-02T19:45:14.029048850Z","packages":[{"ecosystem":"Go","name":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","ranges":[">=0.21.0"],"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."]}