{"id":"CVE-2026-27960","aliases":["EUVD-2026-27420","GHSA-6vvv-vmfr-xhrx","PYSEC-2026-119"],"status":"published","title":"OpenCTI privilege escalation and unauthenticated access via default admin account","description":"OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. In versions 6.6.0 through 6.9.12, there is a privilege escalation vulnerability that can be exploited by unauthenticated attackers to query the API as any existing user, including the default admin account. This issue has been fixed in version 6.9.13. As a workaround, the default admin can be disabled using the `APP__ADMIN__EXTERNALLY_MANAGED` configuration.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.07086,"percentile":0.94304,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-287"],"published":"2026-05-05T18:35:41Z","modified":"2026-10-28T02:30:57Z","exploits":[{"source":"metasploit","id":"exploit/linux/http/opencti_notifier_rce","title":"OpenCTI Authentication Bypass and Notifier EJS Remote Code Execution","type":"exploit","platform":"Unix","date":"2026-05-04","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/linux/http/opencti_notifier_rce"},{"source":"nuclei","id":"CVE-2026-27960","title":"OpenCTI \u003c 6.9.13 - Authentication Bypass via User Impersonation","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-27960.yaml"}],"fixes":[{"ecosystem":"PyPI","package":"pycti","fixed_in":["6.9.13"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"PyPI","package":"pycti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.9.0"},{"fixed":"6.9.13"}]}],"versions":["6.9.0","6.9.1","6.9.10","6.9.11","6.9.12","6.9.2","6.9.3","6.9.4","6.9.5","6.9.6","6.9.7","6.9.8","6.9.9"]}],"products":[{"vendor":"citeum","product":"opencti"},{"vendor":"opencti-platform","product":"opencti"}],"references":[{"url":"https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-6vvv-vmfr-xhrx","tags":["x_refsource_CONFIRM","Mitigation","Vendor Advisory","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27960.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27960","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-27960","title":"OpenCTI privilege escalation and unauthenticated access via default admin account","description":"OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. In versions 6.6.0 through 6.9.12, there is a privilege escalation vulnerability that can be exploited by unauthenticated attackers to query the API as any existing user, including the default admin account. This issue has been fixed in version 6.9.13. As a workaround, the default admin can be disabled using the `APP__ADMIN__EXTERNALLY_MANAGED` configuration.","status":"published","published":"2026-05-05T18:35:41.854Z","modified":"2026-05-06T15:17:00.173Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:19:48.826324Z"}],"euvd":[{"id":"EUVD-2026-27420","description":"OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. In versions 6.6.0 through 6.9.12, there is a privilege escalation vulnerability that can be exploited by unauthenticated attackers to query the API as any existing user, including the default admin account. This issue has been fixed in version 6.9.13. As a workaround, the default admin can be disabled using the `APP__ADMIN__EXTERNALLY_MANAGED` configuration.","status":"published","published":"2026-05-05T18:35:41Z","modified":"2026-05-06T15:17:00Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:05:16.191098Z"}],"nvd":[{"id":"CVE-2026-27960","description":"OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. In versions 6.6.0 through 6.9.12, there is a privilege escalation vulnerability that can be exploited by unauthenticated attackers to query the API as any existing user, including the default admin account. This issue has been fixed in version 6.9.13. As a workaround, the default admin can be disabled using the `APP__ADMIN__EXTERNALLY_MANAGED` configuration.","status":"published","published":"2026-05-05T19:16:21.38Z","modified":"2026-07-25T11:10:00.1Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:17.022502Z"}],"osv":[{"id":"CVE-2026-27960","title":"OpenCTI privilege escalation and unauthenticated access via default admin account","description":"OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. In versions 6.6.0 through 6.9.12, there is a privilege escalation vulnerability that can be exploited by unauthenticated attackers to query the API as any existing user, including the default admin account. This issue has been fixed in version 6.9.13. As a workaround, the default admin can be disabled using the `APP__ADMIN__EXTERNALLY_MANAGED` configuration.","status":"published","published":"2026-05-05T18:35:41.854Z","modified":"2026-10-28T02:30:57.93397849Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:45:00.180685Z"},{"id":"PYSEC-2026-119","description":"OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. In versions 6.6.0 through 6.9.12, there is a privilege escalation vulnerability that can be exploited by unauthenticated attackers to query the API as any existing user, including the default admin account. This issue has been fixed in version 6.9.13. As a workaround, the default admin can be disabled using the `APP__ADMIN__EXTERNALLY_MANAGED` configuration.","status":"published","published":"2026-05-05T19:16:21.38Z","modified":"2026-05-20T09:19:14.796649Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:54.622769Z"}]}}