{"affected":[{"defaultStatus":"unknown","product":"XX-Net","source":"CNA: VulnCheck","vendor":"XX-net","versions":[{"lessThanOrEqual":"5.16.6","status":"affected","version":"0","versionType":"git"},{"lessThanOrEqual":"43aec6f","status":"affected","version":"0","versionType":"git"}]}],"cveId":"CVE-2026-10099","cwes":["CWE-1286"],"description":"XX-Net V5.16.6 contains a WebSocket frame parsing vulnerability in the WebSocket_receive_worker routine of simple_http_server.py that allows attackers to cause corrupted application data by sending unmasked WebSocket frames. The server unconditionally reads 4 bytes as a masking key regardless of whether the MASK bit is set in the frame header, causing the first 4 bytes of payload to be consumed as a mask key and the remaining payload to be incorrectly XOR-decoded, resulting in data corruption alongside missing RSV bit, opcode, and FIN fragmentation validations.","epss":{"date":"2026-11-08","percentile":0.0221,"score":0.00125},"exploits":[],"kev":null,"metrics":[{"score":4,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},{"score":5.1,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}],"modifiedAt":1794146437358,"publishedAt":1780070304062,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/XX-net/XX-Net/issues/14169"},{"source":"CNA: VulnCheck","tags":["issue-tracking","patch"],"url":"https://github.com/XX-net/XX-Net/pull/14170"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/XX-net/XX-Net/commit/a68b972a84ed6e52df9f30237cf47493b9231b53"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/xx-net-websocket-frame-parsing-data-corruption-via-simple-http-server-py"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/XX-net/XX-Net/pull/14170"},{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/XX-net/XX-Net/commit/a68b972a84ed6e52df9f30237cf47493b9231b53"}],"revision":"33ff2b9d0bdc3d1200e991ff28f219b9491fba79ae497d85d8832d5cffee24b9","sources":[{"modifiedAt":1794146437358,"name":"CNA: VulnCheck","retrievedAt":1794146997311,"url":"https://www.cve.org/CVERecord?id=CVE-2026-10099"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794150619601,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-10099"}],"ssvc":{"assessedAt":1780327445941,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"XX-Net V5.16.6 WebSocket Frame Parsing Data Corruption via simple_http_server.py","updatedAt":1794150619601}