{"id":"EUVD-2026-78651","enisaUuid":"701bdf19-935a-3a57-92cf-4a09f2d13d08","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.","datePublished":"Sep 15, 2026, 3:18:24 PM","dateUpdated":"Sep 15, 2026, 4:03:30 PM","baseScore":5.3,"baseScoreVersion":"4.0","baseScoreVector":"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","references":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-39p5-2wrr-xh29\nhttps://www.vulncheck.com/advisories/vikunja-before-2.6.0-team-enumeration-via-project-share\n","aliases":"CVE-2026-91980\nGHSA-2922-qgfj-pr7v\nGHSA-39p5-2wrr-xh29\n","assigner":"VulnCheck","epss":0.31,"enisaIdProduct":[{"id":"c0d12eed-b6d7-3cb8-b0b8-f888e0d7e117","product":{"name":"vikunja","vendor":{"name":"go-vikunja"}},"product_version":"0 \u003c2.6.0"}],"enisaIdVendor":[{"id":"79c0f9f0-d998-32b4-be55-e7128fea8bd9","vendor":{"name":"go-vikunja"}}],"enisaIdVulnerability":[{"id":"47eed841-fef1-31de-bb8e-15e212c1a778","vulnerability":{"id":"GHSA-39p5-2wrr-xh29","description":"Vikunja: Any user can enumerate every team and its members by attaching arbitrary teams to a throwaway project","datePublished":"Oct 9, 2026, 8:52:27 PM","dateUpdated":"Oct 9, 2026, 8:52:27 PM","baseScore":0.0,"references":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-39p5-2wrr-xh29\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-91980\nhttps://github.com/go-vikunja/vikunja/pull/3688\nhttps://github.com/go-vikunja/vikunja\nhttps://github.com/go-vikunja/vikunja/releases/tag/v2.6.0\nhttps://www.vulncheck.com/advisories/vikunja-before-2.6.0-team-enumeration-via-project-share\n","enisa_id":"EUVD-2026-78651\n","aliases":"CVE-2026-91980\nGHSA-39p5-2wrr-xh29\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 2:07:07 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}},{"id":"6f7da3c9-ae4c-3003-8e9f-f4b6d66a0133","vulnerability":{"id":"CVE-2026-91980","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.","datePublished":"Sep 15, 2026, 3:18:24 PM","dateUpdated":"Sep 15, 2026, 4:03:30 PM","status":"PUBLISHED","baseScore":5.3,"baseScoreVersion":"4.0","baseScoreVector":"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","references":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-39p5-2wrr-xh29\nhttps://www.vulncheck.com/advisories/vikunja-before-2.6.0-team-enumeration-via-project-share\n","enisa_id":"EUVD-2026-78651\n","assigner":"VulnCheck","epss":0.31,"dataProcessed":"Nov 7, 2026, 7:21:11 AM","vulnerabilityProduct":[{"id":"307fcbc2-b864-361e-885b-a214ddc88b84","product":{"name":"vikunja","vendor":{"name":"go-vikunja"}},"product_version":"0 \u003c2.6.0"}],"vulnerabilityVendor":[{"id":"cdadffb2-4578-3cff-b485-3dfb0845b45c","vendor":{"name":"go-vikunja"}}]}},{"id":"f0055453-1724-351b-b744-c97e8fe21e05","vulnerability":{"id":"GHSA-2922-qgfj-pr7v","description":"Duplicate Advisory: Vikunja: Any user can enumerate every team and its members by attaching arbitrary teams to a throwaway project","datePublished":"Sep 15, 2026, 6:32:30 PM","dateUpdated":"Oct 9, 2026, 8:52:21 PM","baseScore":0.0,"references":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-39p5-2wrr-xh29\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-91980\nhttps://www.vulncheck.com/advisories/vikunja-before-2.6.0-team-enumeration-via-project-share\n","enisa_id":"EUVD-2026-78651\n","aliases":"GHSA-2922-qgfj-pr7v\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 2:05:47 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[]}