{"id":"CVE-2026-67394","state":"PUBLISHED","title":"A critical local privilege escalation via OS command injection vulnerability has been discovered in Plesk for Linux, affecting all versions from 18.0.34 before 18.0.79.9 and 18.0.8","description":"A critical local privilege escalation via OS command injection vulnerability has been discovered in Plesk for Linux, affecting all versions from 18.0.34 before 18.0.79.9 and 18.0.80.5. The vulnerability allows a customer or reseller with shell access (or allowed to change their own shell access) to elevate privileges to the root account on the hosting server.","publishedAt":"2026-09-01T02:07:41.777Z","updatedAt":"2026-09-01T13:14:45.804Z","severity":{"score":9,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","source":"hackerone"},"assigner":"hackerone","products":["WebPros Plesk"],"affected":[{"vendor":"WebPros","product":"Plesk","defaultStatus":"unaffected","versions":[{"version":"18.0.34","status":"affected","lessThan":"18.0.79.9","versionType":"semver"},{"version":"18.0.80","status":"affected","lessThan":"18.0.80.5","versionType":"semver"}]}],"references":["https://support.plesk.com/hc/en-us/articles/42968165026967-CVE-2026-67394-Vulnerability-in-Plesk-allows-privilege-escalation-to-root"],"weaknesses":["CWE-78"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/67xxx/CVE-2026-67394.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-67394","state":"PUBLISHED","datePublished":"2026-09-01T02:07:41.777Z","dateUpdated":"2026-09-01T13:14:45.804Z","assignerShortName":"hackerone","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateReserved":"2026-07-29T15:00:02.293Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A critical local privilege escalation via OS command injection vulnerability has been discovered in Plesk for Linux, affecting all versions from 18.0.34 before 18.0.79.9 and 18.0.80.5. The vulnerability allows a customer or reseller with shell access (or allowed to change their own shell access) to elevate privileges to the root account on the hosting server."}],"affected":[{"vendor":"WebPros","product":"Plesk","defaultStatus":"unaffected","versions":[{"version":"18.0.34","status":"affected","lessThan":"18.0.79.9","versionType":"semver"},{"version":"18.0.80","status":"affected","lessThan":"18.0.80.5","versionType":"semver"}]}],"references":[{"url":"https://support.plesk.com/hc/en-us/articles/42968165026967-CVE-2026-67394-Vulnerability-in-Plesk-allows-privilege-escalation-to-root"}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","baseScore":9,"baseSeverity":"CRITICAL"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","type":"CWE","lang":"en","description":"CWE-78 OS Command Injection"}]}],"providerMetadata":{"shortName":"hackerone","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateUpdated":"2026-09-01T02:07:41.777Z"},"credits":[{"lang":"en","value":"Aziz Knani","type":"finder"}],"workarounds":[{"lang":"en","value":"Disable shell access for customers or resellers if it is not required (make sure their service plan does not allow to change it)"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-01T13:14:29.944649Z","id":"CVE-2026-67394","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-01T13:14:45.804Z"}}]}}}