{"id":"DEBIAN-CVE-2018-21035","details":"In Qt through 5.14.1, the WebSocket implementation accepts up to 2GB for frames and 2GB for messages. Smaller limits cannot be configured. This makes it easier for attackers to cause a denial of service (memory consumption).","modified":"2026-09-01T16:04:42.281746159Z","published":"2020-02-28T21:15:12.790Z","upstream":["CVE-2018-21035"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2018-21035"}],"affected":[{"package":{"name":"qtwebsockets-opensource-src","ecosystem":"Debian:12","purl":"pkg:deb/debian/qtwebsockets-opensource-src?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.1-2"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2018-21035.json"}},{"package":{"name":"qtwebsockets-opensource-src","ecosystem":"Debian:13","purl":"pkg:deb/debian/qtwebsockets-opensource-src?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.1-2"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2018-21035.json"}},{"package":{"name":"qtwebsockets-opensource-src","ecosystem":"Debian:14","purl":"pkg:deb/debian/qtwebsockets-opensource-src?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.1-2"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2018-21035.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}