{"id":"CVE-2021-26758","aliases":["EUVD-2021-13545","GHSA-9f37-v7ww-2cmh"],"status":"published","title":"Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows...","description":"Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.02707,"percentile":0.86154,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2021-04-07T20:50:20Z","modified":"2026-10-20T10:54:34Z","products":[{"vendor":"litespeedtech","product":"openlitespeed"}],"references":[{"url":"https://github.com/litespeedtech/openlitespeed/issues/217","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://www.exploit-db.com/exploits/49556","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Exploit","Third Party Advisory","VDB Entry","evidence"]},{"url":"https://docs.unsafe-inline.com/0day/openlitespeed-web-server-1.7.8-command-injection-to-privilege-escalation-cve-2021-26758","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26758"},{"url":"https://github.com/advisories/GHSA-9f37-v7ww-2cmh"}],"sources":{"cve":[{"id":"CVE-2021-26758","description":"Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.","status":"published","published":"2021-04-07T20:50:20Z","modified":"2024-08-03T20:33:41.058Z","updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-13545","description":"Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.","status":"published","published":"2021-04-07T20:50:20Z","modified":"2024-08-03T20:33:41Z","updated_at":"2026-11-03T03:24:50.84326Z"}],"ghsa":[{"id":"GHSA-9f37-v7ww-2cmh","title":"Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows...","description":"Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.","status":"published","published":"2022-05-24T17:46:47Z","modified":"2023-01-29T05:05:52Z","cwes":["CWE-269"],"updated_at":"2026-11-02T14:45:53.730969Z"}],"nvd":[{"id":"CVE-2021-26758","description":"Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.","status":"published","published":"2021-04-07T21:15:16.09Z","modified":"2026-06-17T03:43:46.607Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:06:51.610648Z"}],"osv":[{"id":"CVE-2021-26758","description":"Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.","status":"published","published":"2021-04-07T21:15:16.09Z","modified":"2026-10-20T10:54:34.440838591Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:18.778776Z"}]}}