Security advisory

{
  "id": "f723deeb8c143f3c903b53845072782e912a1a90dadd0a0fe9b3d98438e96bc5",
  "url": "https://osv.dev/vulnerability/CVE-2021-26758",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-26758",
    "summary": "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.",
    "evidence": "osv:CVE-2021-26758",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-26758",
      "aliases": [
        "CVE-2021-26758"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/litespeedtech/openlitespeed",
              "type": "GIT",
              "events": [
                {
                  "introduced": "f7f66a3c2bdbdd6b57ef8582e64c1921f5a9ee7c"
                },
                {
                  "last_affected": "f7f66a3c2bdbdd6b57ef8582e64c1921f5a9ee7c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:litespeedtech:openlitespeed:1.7.8:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.7.8"
                      },
                      {
                        "last_affected": "1.7.8"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.7.8",
            "v1.7.8"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26758.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:34.440838591Z",
      "provider": "osv",
      "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"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-26758",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385619,
  "published_at": "2021-04-07T21:15:16.09+00:00"
}