CVE-2026-10099
XX-Net V5.16.6 contains a WebSocket frame parsing vulnerability in the WebSocket_receive_worker routine of simple_http_server.py that allows
CVSS
4.0
Medio
EPSS
0.1%
p2
KEV
—
Exploit Today
1
0-100
Publicado: 29 may 2026 · Última mod.: 21 jul 2026 · CWE-1286
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.
- github.comhttps://github.com/XX-net/XX-Net/commit/a68b972a84ed6e52df9f30237cf47493b9231b53
- github.comhttps://github.com/XX-net/XX-Net/issues/14169
- github.comhttps://github.com/XX-net/XX-Net/pull/14170
- www.vulncheck.comhttps://www.vulncheck.com/advisories/xx-net-websocket-frame-parsing-data-corruption-via-simple-http-server-py