{"id":"UBUNTU-CVE-2026-44545","details":"daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service.","modified":"2026-06-17T11:00:19.381253915Z","published":"2026-06-03T14:16:00Z","upstream":["CVE-2026-44545"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-44545"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-44545"}],"affected":[{"package":{"name":"python-daphne","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/python-daphne?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"daphne","binary_version":"1.4.2-1"},{"binary_name":"python3-daphne","binary_version":"1.4.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44545.json"}},{"package":{"name":"python-daphne","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/python-daphne?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.0-1","2.4.0-1","2.4.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"daphne","binary_version":"2.4.1-1"},{"binary_version":"2.4.1-1","binary_name":"python3-daphne"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44545.json"}},{"package":{"name":"python-daphne","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/python-daphne?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.1-1","3.0.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"daphne","binary_version":"3.0.2-1"},{"binary_version":"3.0.2-1","binary_name":"python3-daphne"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44545.json"}},{"package":{"name":"python-daphne","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/python-daphne?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.0.0-1","binary_name":"daphne"},{"binary_version":"4.0.0-1","binary_name":"python3-daphne"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44545.json"}},{"package":{"name":"python-daphne","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/python-daphne?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.2-2"],"ecosystem_specific":{"binaries":[{"binary_name":"daphne","binary_version":"4.1.2-2"},{"binary_name":"python3-daphne","binary_version":"4.1.2-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44545.json"}},{"package":{"name":"python-daphne","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/python-daphne?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.2-2","4.2.1-1","4.2.1-2"],"ecosystem_specific":{"binaries":[{"binary_name":"daphne","binary_version":"4.2.1-2"},{"binary_name":"python3-daphne","binary_version":"4.2.1-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44545.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}