{"id":"UBUNTU-CVE-2020-26759","details":"clickhouse-driver before 0.1.5 allows a malicious clickhouse server to trigger a crash or execute arbitrary code (on a database client) via a crafted server response, due to a buffer overflow.","modified":"2025-07-17T16:55:56Z","published":"2021-01-06T13:15:00Z","withdrawn":"2025-07-18T16:46:08Z","upstream":["CVE-2020-26759"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26759"},{"type":"REPORT","url":"https://github.com/mymarilyn/clickhouse-driver/commit/3e990547e064b8fca916b23a0f7d6fe8c63c7f6b"},{"type":"REPORT","url":"https://github.com/mymarilyn/clickhouse-driver/commit/d708ed548e1d6f254ba81a21de8ba543a53b5598"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-26759"}],"affected":[{"package":{"name":"python-clickhouse-driver","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/python-clickhouse-driver@0.2.0-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.0-1"}]}],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"python3-clickhouse-driver","binary_version":"0.2.0-1"},{"binary_name":"python3-clickhouse-driver-dbgsym","binary_version":"0.2.0-1"},{"binary_name":"python3-clickhouse-driver-doc","binary_version":"0.2.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-26759.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:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}