{"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":"1.0.0","versionType":"semver"},{"status":"unaffected","version":"2.7.1","versionType":"semver"}]}],"cveId":"CVE-2026-123531","cwes":["CWE-400"],"description":"Vikunja from 1.0.0 before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows authenticated users to bypass service.maxitemsperpage by sending page=0 to /api/v1 list endpoints. Attackers can self-register and repeatedly request page=0 to force unbounded SQL queries, memory materialisation, and per-row query fan-out, degrading availability for other users.","epss":{"date":"2026-11-12","percentile":0.31291,"score":0.00369},"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v579-5fwc-gr28"}],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":8.8,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},{"score":8.7,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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":8.8,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794492365424,"publishedAt":1794101860281,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v579-5fwc-gr28"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/vikunja-1.0.0-before-2.7.1-pagination-limit-bypass-via-page-0-parameter"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v579-5fwc-gr28"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v579-5fwc-gr28"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/vikunja-1.0.0-before-2.7.1-pagination-limit-bypass-via-page-0-parameter"}],"remediation":[],"revision":"efc77a435e930f0090b3373131f3ed4e79c388fea166135d760834ffd87c4b21","sources":[{"modifiedAt":1794492365424,"name":"CNA: VulnCheck","retrievedAt":1794496266410,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123531"},{"modifiedAt":1794104203317,"name":"NVD","retrievedAt":1794118569812,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123531"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794496292815,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-123531"}],"ssvc":{"assessedAt":1794492328548,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Vikunja 1.0.0 before 2.7.1 Pagination Limit Bypass via page=0 Parameter","updatedAt":1794496292815}