{"id":"CVE-2023-26151","aliases":["GHSA-gfvq-mxw3-mfq3","PYSEC-2023-190"],"url":"https://o3.security/vulnerability/CVE-2023-26151","summary":"asyncua vulnerable to denial of service via infinite loop","details":"Versions of the package asyncua before 0.9.96 are vulnerable to Denial of Service (DoS) such that an attacker can send a malformed packet and as a result, the server will enter into an infinite loop and consume excessive memory.","published":"2023-10-03T05:00:01.093Z","modified":"2026-10-28T02:31:01.335685996Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/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/f6603daa34a93a658f0e176cb0b9ee5a6643b262","label":"FreeOpcUa/opcua-asyncio@f6603da"},"references":[{"type":"WEB","url":"https://gist.github.com/artfire52/1540b234350795e0ecb4d672608dbec8"},{"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-5673709"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/26xxx/CVE-2023-26151.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-26151"},{"type":"REPORT","url":"https://github.com/FreeOpcUa/opcua-asyncio/issues/1013"},{"type":"FIX","url":"https://github.com/FreeOpcUa/opcua-asyncio/commit/f6603daa34a93a658f0e176cb0b9ee5a6643b262"},{"type":"FIX","url":"https://github.com/FreeOpcUa/opcua-asyncio/pull/1039"},{"type":"PACKAGE","url":"https://github.com/FreeOpcUa/opcua-asyncio"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/asyncua/PYSEC-2023-190.yaml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:31:01.335685996Z"}}