{"cve":"CVE-2021-26758","nvd":{"published":"2021-04-07T21:15:16.090","modified":"2026-06-17T03:43:46.607","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-269"],"references":["https://docs.unsafe-inline.com/0day/openlitespeed-web-server-1.7.8-command-injection-to-privilege-escalation-cve-2021-26758","https://github.com/litespeedtech/openlitespeed/issues/217","https://www.exploit-db.com/exploits/49556","https://docs.unsafe-inline.com/0day/openlitespeed-web-server-1.7.8-command-injection-to-privilege-escalation-cve-2021-26758","https://github.com/litespeedtech/openlitespeed/issues/217"],"products":["litespeedtech:openlitespeed"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-26758","score":0.02707,"percentile":0.85968,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}