{"action":"Upgrade qtwebsockets-opensource-src to 5.15.1-2 or later.","affected":[{"fixed":"5.15.1-2","introduced":"0"}],"component":"qtwebsockets-opensource-src","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["5.15.1-2"],"id":"tcs_01M5NDBSCM7NQ28CVYHDS38668","modified_at":"2026-10-23T18:03:05.823535329Z","published_at":"2020-02-28T21:15:12.790Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-21035","https://security-tracker.debian.org/tracker/CVE-2018-21035"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-21035#Debian:13/qtwebsockets-opensource-src","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-21035"}],"summary":"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 servi"}