{"id":"CVE-2021-42084","aliases":["EUVD-2021-29070","GHSA-2wm3-m74f-6p2x"],"status":"published","title":"An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send...","description":"An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send a series of crafted requests that cause an endless loop and thus cause denial of service.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00928,"percentile":0.61032,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-835"],"published":"2021-10-07T19:37:13Z","modified":"2026-10-24T10:30:55Z","products":[{"vendor":"zammad","product":"zammad"}],"references":[{"url":"https://zammad.com/en/advisories/zaa-2021-11","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-42084"},{"url":"https://github.com/advisories/GHSA-2wm3-m74f-6p2x"}],"sources":{"cve":[{"id":"CVE-2021-42084","description":"An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send a series of crafted requests that cause an endless loop and thus cause denial of service.","status":"published","published":"2021-10-07T19:37:13Z","modified":"2024-08-04T03:22:25.95Z","updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29070","description":"An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send a series of crafted requests that cause an endless loop and thus cause denial of service.","status":"published","published":"2021-10-07T19:37:13Z","modified":"2024-08-04T03:22:25Z","updated_at":"2026-11-03T03:24:16.784119Z"}],"ghsa":[{"id":"GHSA-2wm3-m74f-6p2x","title":"An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send...","description":"An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send a series of crafted requests that cause an endless loop and thus cause denial of service.","status":"published","published":"2022-05-24T19:16:52Z","modified":"2023-01-30T05:02:27Z","cwes":["CWE-835"],"updated_at":"2026-11-02T14:46:38.51672Z"}],"nvd":[{"id":"CVE-2021-42084","description":"An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send a series of crafted requests that cause an endless loop and thus cause denial of service.","status":"published","published":"2021-10-07T21:15:07.403Z","modified":"2026-06-17T04:09:17.21Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:06:59.689345Z"}],"osv":[{"id":"CVE-2021-42084","description":"An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send a series of crafted requests that cause an endless loop and thus cause denial of service.","status":"published","published":"2021-10-07T21:15:07.403Z","modified":"2026-10-24T10:30:55.538349898Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:21.557945Z"}]}}