{"id":"UBUNTU-CVE-2023-26150","details":"Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication.  **Note:**  This issue is a result of missing checks for services that require an active session.","modified":"2025-10-24T05:01:50Z","published":"2023-10-03T05:15:00Z","upstream":["CVE-2023-26150"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-26150"},{"type":"REPORT","url":"https://github.com/FreeOpcUa/opcua-asyncio/commit/b4106dfd5037423c9d1810b48a97296b59cde513"},{"type":"REPORT","url":"https://github.com/FreeOpcUa/opcua-asyncio/commit/2be7ce80df05de8d6c6ae1ebce6fa2bb7147844a"},{"type":"REPORT","url":"https://github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96"},{"type":"REPORT","url":"https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673435"},{"type":"REPORT","url":"https://gist.github.com/artfire52/84f7279a4119d6f90381ac49d7121121"},{"type":"REPORT","url":"https://github.com/FreeOpcUa/opcua-asyncio/issues/1014"},{"type":"REPORT","url":"https://github.com/FreeOpcUa/opcua-asyncio/pull/1015"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-26150"}],"affected":[{"package":{"name":"python-opcua","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/python-opcua@0.90.3-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.90.3-1"],"ecosystem_specific":{"binaries":[{"binary_name":"python-opcua","binary_version":"0.90.3-1"},{"binary_version":"0.90.3-1","binary_name":"python-opcua-tools"},{"binary_name":"python3-opcua","binary_version":"0.90.3-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-26150.json"}},{"package":{"name":"python-opcua","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/python-opcua@0.98.9-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.98.6-3","0.98.6-3ubuntu1","0.98.9-1"],"ecosystem_specific":{"binaries":[{"binary_name":"python-opcua-tools","binary_version":"0.98.9-1"},{"binary_name":"python3-opcua","binary_version":"0.98.9-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-26150.json"}},{"package":{"name":"python-opcua","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/python-opcua@0.98.11-1ubuntu1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.98.11-1","0.98.11-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"python-opcua-tools","binary_version":"0.98.11-1ubuntu1"},{"binary_name":"python3-opcua","binary_version":"0.98.11-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-26150.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}