🛡️ CVE-2026-10099
🟡 CVSS 4.0 — Medium ✅ No Known Exploit CWE-1286 NVD
4.0
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 4.0
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE CWE-1286
Public Exploit ✅ No
Source NVD
Published 2026-05-29
Updated 2026-06-02
Modified 2026-06-01
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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