{"id":"CVE-2023-26150","aliases":["GHSA-2894-qcqf-g23g","PYSEC-2023-189"],"url":"https://o3.security/vulnerability/CVE-2023-26150","summary":"asyncua Improper Authentication vulnerability","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.\r\r**Note:**\r\rThis issue is a result of missing checks for services that require an active session.","published":"2023-10-03T05:00:02.176Z","modified":"2026-07-15T01:49:09.759732648Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P"},"epss":null,"cisaKev":null,"exploitsKnown":3,"affectedPackages":[{"ecosystem":"PyPI","name":"asyncua","fixedVersion":"0.9.96"}],"fix":{"url":"https://github.com/FreeOpcUa/opcua-asyncio/commit/2be7ce80df05de8d6c6ae1ebce6fa2bb7147844a","label":"FreeOpcUa/opcua-asyncio@2be7ce8"},"references":[{"type":"WEB","url":"https://gist.github.com/artfire52/84f7279a4119d6f90381ac49d7121121"},{"type":"WEB","url":"https://github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96"},{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673435"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/26xxx/CVE-2023-26150.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-26150"},{"type":"REPORT","url":"https://github.com/FreeOpcUa/opcua-asyncio/issues/1014"},{"type":"FIX","url":"https://github.com/FreeOpcUa/opcua-asyncio/commit/2be7ce80df05de8d6c6ae1ebce6fa2bb7147844a"},{"type":"FIX","url":"https://github.com/FreeOpcUa/opcua-asyncio/commit/b4106dfd5037423c9d1810b48a97296b59cde513"},{"type":"FIX","url":"https://github.com/FreeOpcUa/opcua-asyncio/pull/1015"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:09.759732648Z"}}