{"id":"CVE-2020-28873","aliases":["EUVD-2020-21264","GHSA-275f-jq4p-wxgw"],"status":"published","title":"Fluxbb 1.5.11 is affected by a denial of service (DoS) vulnerability by sending an extremely long...","description":"Fluxbb 1.5.11 is affected by a denial of service (DoS) vulnerability by sending an extremely long password via the user login form. When a long password is sent, the password hashing process will result in CPU and memory exhaustion on the server.","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":"2026-11-09","score":0.00858,"percentile":0.58706,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-916"],"published":"2021-03-17T12:31:52Z","modified":"2026-07-09T01:16:43Z","products":[{"vendor":"fluxbb","product":"fluxbb"}],"references":[{"url":"https://www.acunetix.com/vulnerabilities/web/long-password-denial-of-service/#:~:text=By%20sending%20a%20very%20long%2Ca%20vulnerable%20password%20hashing%20implementation","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28873"},{"url":"https://www.acunetix.com/vulnerabilities/web/long-password-denial-of-service/#:~:text=By%20sending%20a%20very%20long,a%20vulnerable%20password%20hashing%20implementation"},{"url":"http://fluxbb.com"},{"url":"https://github.com/advisories/GHSA-275f-jq4p-wxgw"}],"sources":{"cve":[{"id":"CVE-2020-28873","description":"Fluxbb 1.5.11 is affected by a denial of service (DoS) vulnerability by sending an extremely long password via the user login form. When a long password is sent, the password hashing process will result in CPU and memory exhaustion on the server.","status":"published","published":"2021-03-17T12:31:52Z","modified":"2026-07-09T00:11:59.898Z","updated_at":"2026-11-02T14:35:57.017407Z"}],"euvd":[{"id":"EUVD-2020-21264","description":"Fluxbb 1.5.11 is affected by a denial of service (DoS) vulnerability by sending an extremely long password via the user login form. When a long password is sent, the password hashing process will result in CPU and memory exhaustion on the server.","status":"published","published":"2021-03-17T12:31:52Z","modified":"2026-07-09T00:11:59Z","updated_at":"2026-11-02T18:20:09.583461Z"}],"ghsa":[{"id":"GHSA-275f-jq4p-wxgw","title":"Fluxbb 1.5.11 is affected by a denial of service (DoS) vulnerability by sending an extremely long...","description":"Fluxbb 1.5.11 is affected by a denial of service (DoS) vulnerability by sending an extremely long password via the user login form. When a long password is sent, the password hashing process will result in CPU and memory exhaustion on the server.","status":"published","published":"2022-05-24T17:44:42Z","modified":"2026-07-05T00:32:22Z","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-916"],"updated_at":"2026-11-02T15:09:14.897479Z"}],"nvd":[{"id":"CVE-2020-28873","description":"Fluxbb 1.5.11 is affected by a denial of service (DoS) vulnerability by sending an extremely long password via the user login form. When a long password is sent, the password hashing process will result in CPU and memory exhaustion on the server.","status":"published","published":"2021-03-17T13:15:14.937Z","modified":"2026-07-09T01:16:43.927Z","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":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-916"],"updated_at":"2026-11-02T14:06:37.687844Z"}]}}