{"id":"CVE-2026-91980","revision":"18f8fa763ac74d5ba7e152211fa35af8","records":[{"revision":"18f8fa763ac74d5ba7e152211fa35af8","observedAt":"2026-10-25T16:19:22.228+00:00","statement":{"source":"nvd","id":"CVE-2026-91980","aliases":[],"title":"vikunja before 2.6.0 fails to validate team access when attaching teams to projects, allowing authenticated users to enumerate all teams and members. Attackers can attach arbitrary team IDs via the project teams endpoint to retrieve complet…","description":"vikunja before 2.6.0 fails to validate team access when attaching teams to projects, allowing authenticated users to enumerate all teams and members. Attackers can attach arbitrary team IDs via the project teams endpoint to retrieve complete team rosters including member names and admin flags for unauthorized teams.","state":0,"publishedAt":"2026-09-15T16:17:54.94+00:00","modifiedAt":"2026-09-16T19:49:18.987+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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":5.3,"severity":"MEDIUM"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3,"severity":"MEDIUM"}],"references":["https://github.com/go-vikunja/vikunja/security/advisories/GHSA-39p5-2wrr-xh29","https://www.vulncheck.com/advisories/vikunja-before-2.6.0-team-enumeration-via-project-share"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-91980","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-200"],"productCriteria":[],"sourceDates":{"published":"2026-09-15T16:17:54.940","lastModified":"2026-09-16T19:49:18.987"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-91980","identifiers":["CVE-2026-91980"]},"retained":false,"historicalAffected":[]}],"coverage":[]}