{"id":"CVE-2026-91969","summary":"vikunja before 2.6.0 Resource Exhaustion via CSV Migration","details":"vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the POST /api/v2/migration/csv/migrate endpoint that fails to limit parsed row cardinality. Authenticated attackers can upload multipart CSV files with millions of tiny records to exhaust process memory and terminate the API service.","aliases":["GHSA-pqf9-h8g4-8gmh","GO-2026-6746"],"modified":"2026-10-22T10:35:05.958707179Z","published":"2026-09-15T15:18:20.780Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91969.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-400"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91969.json"},{"type":"ADVISORY","url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-pqf9-h8g4-8gmh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91969"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/vikunja-before-2.6.0-resource-exhaustion-via-csv-migration"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/go-vikunja/vikunja","events":[{"introduced":"ef2200e9429c5cc42f5c1811433418bfcc72b3aa"},{"fixed":"a4218eeb8fb3ada95e14a2331731524c9120d5bd"}],"database_specific":{"extracted_events":[{"strategy":"StandardRange","range":[{"introduced":"2.5.0"},{"fixed":"2.6.0"}],"source":"AFFECTED_FIELD"},{"source":"DESCRIPTION","range":[{"introduced":"0"},{"fixed":"2.6.0"}]}]}}],"versions":["v2.5.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-91969.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}