{"id":"CVE-2021-4433","aliases":["EUVD-2021-34260","GHSA-22mf-f3cc-mh6f"],"status":"published","title":"Karjasoft Sami HTTP Server HTTP HEAD Rrequest denial of service","description":"A vulnerability was found in Karjasoft Sami HTTP Server 2.0. It has been classified as problematic. Affected is an unknown function of the component HTTP HEAD Rrequest Handler. The manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250836.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01261,"percentile":0.6986,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-404"],"published":"2024-01-18T00:31:03Z","modified":"2026-06-17T04:19:44Z","products":[{"vendor":"karjasoft","product":"sami http server"},{"vendor":"karjasoft","product":"sami_http_server"}],"references":[{"url":"https://vuldb.com/?id.250836","tags":["vdb-entry","x_transferred","Third Party Advisory"]},{"url":"https://vuldb.com/?ctiid.250836","tags":["signature","permissions-required","x_transferred","Permissions Required","Third Party Advisory"]},{"url":"https://packetstormsecurity.com/files/163138/Sami-HTTP-Server-2.0-Denial-Of-Service.html","tags":["exploit","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4433"},{"url":"https://github.com/advisories/GHSA-22mf-f3cc-mh6f"}],"sources":{"cve":[{"id":"CVE-2021-4433","title":"Karjasoft Sami HTTP Server HTTP HEAD Rrequest denial of service","description":"A vulnerability was found in Karjasoft Sami HTTP Server 2.0. It has been classified as problematic. Affected is an unknown function of the component HTTP HEAD Rrequest Handler. The manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250836.","status":"published","published":"2024-01-18T00:31:03.59Z","modified":"2024-10-23T18:22:58.309Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"},{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","assessor":"cna"}],"cwes":["CWE-404"],"updated_at":"2026-11-02T14:33:07.697752Z"}],"euvd":[{"id":"EUVD-2021-34260","description":"A vulnerability was found in Karjasoft Sami HTTP Server 2.0. It has been classified as problematic. Affected is an unknown function of the component HTTP HEAD Rrequest Handler. The manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250836.","status":"published","published":"2024-01-18T00:31:03Z","modified":"2024-10-23T18:22:58Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T00:05:21.011532Z"}],"ghsa":[{"id":"GHSA-22mf-f3cc-mh6f","title":"A vulnerability was found in Karjasoft Sami HTTP Server 2.0. It has been classified as...","description":"A vulnerability was found in Karjasoft Sami HTTP Server 2.0. It has been classified as problematic. Affected is an unknown function of the component HTTP HEAD Rrequest Handler. The manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250836.","status":"published","published":"2024-01-18T03:30:24Z","modified":"2024-01-18T03:30:27Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-404"],"updated_at":"2026-11-02T14:55:26.125732Z"}],"nvd":[{"id":"CVE-2021-4433","description":"A vulnerability was found in Karjasoft Sami HTTP Server 2.0. It has been classified as problematic. Affected is an unknown function of the component HTTP HEAD Rrequest Handler. The manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250836.","status":"published","published":"2024-01-18T01:15:43.46Z","modified":"2026-06-17T04:19:44.81Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"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":"secondary"}],"cwes":["CWE-404"],"updated_at":"2026-11-02T14:07:08.163458Z"}]}}