{"id":"CVE-2021-33840","aliases":["EUVD-2021-20514","GHSA-r75x-rqwg-mqhc"],"status":"published","title":"The server in Luca through 1.1.14 allows remote attackers to cause a denial of service (insertion...","description":"The server in Luca through 1.1.14 allows remote attackers to cause a denial of service (insertion of many fake records related to COVID-19) because Phone Number data lacks a digital signature.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00898,"percentile":0.59912,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-345","CWE-400"],"published":"2021-06-03T23:57:32Z","modified":"2026-10-20T10:53:48Z","products":[{"vendor":"luca-app","product":"luca"}],"references":[{"url":"https://luca-app.de/securityoverview/processes/guest_registration.html#verifying-the-contact-data","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://gitlab.com/lucaapp/web/-/issues/1#note_560963608","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33840"},{"url":"https://github.com/advisories/GHSA-r75x-rqwg-mqhc"}],"sources":{"cve":[{"id":"CVE-2021-33840","description":"The server in Luca through 1.1.14 allows remote attackers to cause a denial of service (insertion of many fake records related to COVID-19) because Phone Number data lacks a digital signature.","status":"published","published":"2021-06-03T23:57:32Z","modified":"2024-08-03T23:58:23.224Z","updated_at":"2026-11-02T14:33:10.204494Z"}],"euvd":[{"id":"EUVD-2021-20514","description":"The server in Luca through 1.1.14 allows remote attackers to cause a denial of service (insertion of many fake records related to COVID-19) because Phone Number data lacks a digital signature.","status":"published","published":"2021-06-03T23:57:32Z","modified":"2024-08-03T23:58:23Z","updated_at":"2026-11-03T03:24:33.318275Z"}],"ghsa":[{"id":"GHSA-r75x-rqwg-mqhc","title":"The server in Luca through 1.1.14 allows remote attackers to cause a denial of service (insertion...","description":"The server in Luca through 1.1.14 allows remote attackers to cause a denial of service (insertion of many fake records related to COVID-19) because Phone Number data lacks a digital signature.","status":"published","published":"2022-05-24T19:04:07Z","modified":"2023-01-27T05:03:17Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:42:12.753514Z"}],"nvd":[{"id":"CVE-2021-33840","description":"The server in Luca through 1.1.14 allows remote attackers to cause a denial of service (insertion of many fake records related to COVID-19) because Phone Number data lacks a digital signature.","status":"published","published":"2021-06-04T00:15:07.41Z","modified":"2026-06-17T03:55:17.6Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:06:53.987491Z"}],"osv":[{"id":"CVE-2021-33840","description":"The server in Luca through 1.1.14 allows remote attackers to cause a denial of service (insertion of many fake records related to COVID-19) because Phone Number data lacks a digital signature.","status":"published","published":"2021-06-04T00:15:07.41Z","modified":"2026-10-20T10:53:48.562167479Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:20.13324Z"}]}}