{"cve":"CVE-2026-111921","nvd":{"published":"2026-10-17T19:16:34.820","modified":"2026-10-21T22:16:48.260","status":"Deferred","description":"Vikunja 0.13.0 before 2.7.0 contains an incorrect authorization vulnerability that allows project members with Write permission to delete admin-tier link shares because the delete permission check reads an unloaded share object. Attackers can send DELETE requests to the v1 or v2 projects shares endpoints with sequential share IDs to revoke admin links and invalidate existing share sessions.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","score":5.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","score":5.4},"cwes":["CWE-863"],"references":["https://github.com/go-vikunja/vikunja/security/advisories/GHSA-fmmf-xq98-g327","https://www.vulncheck.com/advisories/vikunja-0.13.0-before-2.7.0-incorrect-authorization-in-link-share-deletion","https://github.com/go-vikunja/vikunja/security/advisories/GHSA-fmmf-xq98-g327"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-111921","score":0.00213,"percentile":0.11505,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-fmmf-xq98-g327","url":"https://osv.dev/vulnerability/GHSA-fmmf-xq98-g327","summary":"Vikunja: Write-level project members can delete admin-tier link shares through an unloaded permission check","modified":"2026-10-19T21:41:16.835644031Z","packages":[{"ecosystem":"Go","name":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","ranges":[">=0.13.0 <=2.6.0"],"fixed":[]}]},{"id":"GO-2026-6730","url":"https://osv.dev/vulnerability/GO-2026-6730","summary":"Vikunja: Write-level project members can delete admin-tier link shares through an unloaded permission check in code.vikunja.io/api","modified":"2026-10-19T21:41:16.835644031Z","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."]}