{"id":"CVE-2020-28873","title":"Fluxbb 1.5.11 is affected by a denial of service (DoS) vulnerability by sending an extremely long password via the user login form","summary":"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 th…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-916"],"vendor":"fluxbb","product":"fluxbb","affected":["fluxbb = 1.5.11"],"published":"2021-03-17","updated":"2026-07-05","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-28873","references":[{"url":"https://www.acunetix.com/vulnerabilities/web/long-password-denial-of-service/#:~:text=By%20sending%20a%20very%20long%2Ca%20vulnerable%20password%20hashing%20implementation","label":"cve@mitre.org"},{"url":"http://fluxbb.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.acunetix.com/vulnerabilities/web/long-password-denial-of-service/#:~:text=By%20sending%20a%20very%20long%2Ca%20vulnerable%20password%20hashing%20implementation","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00858,"epssPercentile":0.5644,"ingestedAt":"2026-07-05T00:59:25.839Z","slug":"CVE-2020-28873","body":"## Overview\n\nFluxbb 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.\n\n## Affected\n\n- `fluxbb = 1.5.11`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}