{"id":"USN-8457-1","summary":"mysql-8.0, mysql-8.4 vulnerabilities","details":"It was discovered that MySQL Router incorrectly handled repeated TLS\nprotocol upgrade requests. An unauthenticated remote attacker could\npossibly use this issue to cause MySQL Router to crash, resulting in a\ndenial of service. (CVE-2026-46862)\n\nIt was discovered that MySQL Server incorrectly handled connection\nauthentication. An unauthenticated remote attacker could possibly use this\nissue to cause MySQL to crash, resulting in a denial of service.\n(CVE-2026-46863)","modified":"2026-06-22T20:19:14.923677939Z","published":"2026-06-22T13:11:43Z","related":["UBUNTU-CVE-2026-46862","UBUNTU-CVE-2026-46863"],"upstream":["CVE-2026-46862","CVE-2026-46863","UBUNTU-CVE-2026-46862","UBUNTU-CVE-2026-46863"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8457-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-46862"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-46863"}],"affected":[{"package":{"name":"mysql-8.0","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/mysql-8.0?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.46-0ubuntu0.22.04.3"}]}],"versions":["8.0.26-0ubuntu1","8.0.27-0ubuntu0.21.10.1","8.0.28-0ubuntu3","8.0.28-0ubuntu4","8.0.29-0ubuntu0.22.04.1","8.0.29-0ubuntu0.22.04.2","8.0.29-0ubuntu0.22.04.3","8.0.30-0ubuntu0.22.04.1","8.0.31-0ubuntu0.22.04.1","8.0.32-0buntu0.22.04.1","8.0.32-0ubuntu0.22.04.2","8.0.33-0ubuntu0.22.04.1","8.0.33-0ubuntu0.22.04.2","8.0.33-0ubuntu0.22.04.4","8.0.34-0ubuntu0.22.04.1","8.0.35-0ubuntu0.22.04.1","8.0.36-0ubuntu0.22.04.1","8.0.37-0ubuntu0.22.04.3","8.0.39-0ubuntu0.22.04.1","8.0.40-0ubuntu0.22.04.1","8.0.41-0ubuntu0.22.04.1","8.0.42-0ubuntu0.22.04.1","8.0.42-0ubuntu0.22.04.2","8.0.43-0ubuntu0.22.04.1","8.0.43-0ubuntu0.22.04.2","8.0.44-0ubuntu0.22.04.1","8.0.44-0ubuntu0.22.04.2","8.0.45-0ubuntu0.22.04.1","8.0.46-0ubuntu0.22.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libmysqlclient21","binary_version":"8.0.46-0ubuntu0.22.04.3"},{"binary_name":"mysql-client","binary_version":"8.0.46-0ubuntu0.22.04.3"},{"binary_name":"mysql-client-8.0","binary_version":"8.0.46-0ubuntu0.22.04.3"},{"binary_name":"mysql-client-core-8.0","binary_version":"8.0.46-0ubuntu0.22.04.3"},{"binary_name":"mysql-router","binary_version":"8.0.46-0ubuntu0.22.04.3"},{"binary_name":"mysql-server","binary_version":"8.0.46-0ubuntu0.22.04.3"},{"binary_name":"mysql-server-8.0","binary_version":"8.0.46-0ubuntu0.22.04.3"},{"binary_name":"mysql-server-core-8.0","binary_version":"8.0.46-0ubuntu0.22.04.3"},{"binary_name":"mysql-source-8.0","binary_version":"8.0.46-0ubuntu0.22.04.3"},{"binary_name":"mysql-testsuite","binary_version":"8.0.46-0ubuntu0.22.04.3"},{"binary_name":"mysql-testsuite-8.0","binary_version":"8.0.46-0ubuntu0.22.04.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8457-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-46862"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-46863"}],"ecosystem":"Ubuntu:22.04:LTS"}}},{"package":{"name":"mysql-8.0","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/mysql-8.0?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.46-0ubuntu0.24.04.3"}]}],"versions":["8.0.34-1ubuntu1","8.0.35-1ubuntu1","8.0.35-1ubuntu2","8.0.36-1","8.0.36-2ubuntu1","8.0.36-2ubuntu2","8.0.36-2ubuntu3","8.0.37-0ubuntu0.24.04.1","8.0.39-0ubuntu0.24.04.1","8.0.39-0ubuntu0.24.04.2","8.0.40-0ubuntu0.24.04.1","8.0.41-0ubuntu0.24.04.1","8.0.42-0ubuntu0.24.04.1","8.0.42-0ubuntu0.24.04.2","8.0.43-0ubuntu0.24.04.1","8.0.43-0ubuntu0.24.04.2","8.0.44-0ubuntu0.24.04.1","8.0.44-0ubuntu0.24.04.2","8.0.45-0ubuntu0.24.04.1","8.0.46-0ubuntu0.24.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libmysqlclient21","binary_version":"8.0.46-0ubuntu0.24.04.3"},{"binary_name":"mysql-client","binary_version":"8.0.46-0ubuntu0.24.04.3"},{"binary_name":"mysql-client-8.0","binary_version":"8.0.46-0ubuntu0.24.04.3"},{"binary_name":"mysql-client-core-8.0","binary_version":"8.0.46-0ubuntu0.24.04.3"},{"binary_name":"mysql-router","binary_version":"8.0.46-0ubuntu0.24.04.3"},{"binary_name":"mysql-server","binary_version":"8.0.46-0ubuntu0.24.04.3"},{"binary_name":"mysql-server-8.0","binary_version":"8.0.46-0ubuntu0.24.04.3"},{"binary_name":"mysql-server-core-8.0","binary_version":"8.0.46-0ubuntu0.24.04.3"},{"binary_name":"mysql-source-8.0","binary_version":"8.0.46-0ubuntu0.24.04.3"},{"binary_name":"mysql-testsuite","binary_version":"8.0.46-0ubuntu0.24.04.3"},{"binary_name":"mysql-testsuite-8.0","binary_version":"8.0.46-0ubuntu0.24.04.3"}],"availability":"No 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required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8457-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-46862"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-46863"}],"ecosystem":"Ubuntu:24.04:LTS"}}},{"package":{"name":"mysql-8.4","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/mysql-8.4?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.4.10-0ubuntu0.25.10.1"}]}],"versions":["8.4.4-0ubuntu2","8.4.5-0ubuntu1","8.4.5-0ubuntu2","8.4.5-0ubuntu3","8.4.6-0ubuntu1","8.4.6-0ubuntu3","8.4.7-0ubuntu0.25.10.2","8.4.7-0ubuntu0.25.10.3","8.4.8-0ubuntu0.25.10.1","8.4.9-0ubuntu0.25.10.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmysqlclient24","binary_version":"8.4.10-0ubuntu0.25.10.1"},{"binary_name":"mysql-client","binary_version":"8.4.10-0ubuntu0.25.10.1"},{"binary_name":"mysql-client-core","binary_version":"8.4.10-0ubuntu0.25.10.1"},{"binary_name":"mysql-router","binary_version":"8.4.10-0ubuntu0.25.10.1"},{"binary_name":"mysql-server","binary_version":"8.4.10-0ubuntu0.25.10.1"},{"binary_name":"mysql-server-core","binary_version":"8.4.10-0ubuntu0.25.10.1"},{"binary_name":"mysql-source","binary_version":"8.4.10-0ubuntu0.25.10.1"},{"binary_name":"mysql-testsuite","binary_version":"8.4.10-0ubuntu0.25.10.1"}],"availability":"No 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