{"affected":[{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"code.vikunja.io/api","product":"vikunja","source":"CNA: VulnCheck","vendor":"go-vikunja","versions":[{"lessThan":"2.7.1","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.7.1","versionType":"semver"}]}],"cveId":"CVE-2026-123522","cwes":["CWE-639"],"description":"Vikunja before 2.7.1 contains an authorization bypass vulnerability that allows authenticated users to read any task by injecting a crafted task object into a no-op Kanban bucket move. Attackers can set task.id to a victim task and task.project_id to their own project, routing full task contents to their webhook and forging mention notifications.","epss":{"date":"2026-11-09","percentile":0.24336,"score":0.00312},"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-5q33-h98p-rgh9"}],"kev":null,"metrics":[{"score":7.1,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.1,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},{"score":7.1,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/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","version":"4.0"},{"score":7.1,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","version":"3.1"}],"modifiedAt":1794233053960,"publishedAt":1794101852461,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-5q33-h98p-rgh9"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/vikunja-before-2.7.1-task-information-disclosure-via-kanban-bucket-move-webhook"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-5q33-h98p-rgh9"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-5q33-h98p-rgh9"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/vikunja-before-2.7.1-task-information-disclosure-via-kanban-bucket-move-webhook"}],"remediation":[],"revision":"6e2a0919536c22c4736b12ac7662cad42860d44e6b53c119cc3e74c7c1ecb024","sources":[{"modifiedAt":1794233053960,"name":"CNA: VulnCheck","retrievedAt":1794233344584,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123522"},{"modifiedAt":1794104201733,"name":"NVD","retrievedAt":1794118568427,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123522"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794237016204,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-123522"}],"ssvc":{"assessedAt":1794233031568,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Vikunja before 2.7.1 Task Information Disclosure via Kanban Bucket Move Webhook","updatedAt":1794237016204}