🟠 《高危安全漏洞：CVE-2026-62389》

CVSS 评分: 高危（8.7）　　状态: Received　　发布时间: 2026-07-15

漏洞描述

ws before 8.21.1 contains a memory exhaustion vulnerability in lib/receiver.js where the fragment guard only triggers when fragment count reaches maxFragments, allowing attackers to exhaust memory by sending incomplete fragmented WebSocket messages. Attackers can send a text frame with FIN=0 followed by continuation frames without completing the sequence, causing each fragment to be stored as a separate Buffer object with significant overhead, enabling denial of service through heap exhaustion.

🔍 技术细节

字段 值
CVE ID CVE-2026-62389
CVSS 评分 8.7 🟠
严重程度 高危
CVSS 向量 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE 分类 CWE-770
发布时间 2026-07-15
最后更新 2026-07-15
状态 Received
数据来源 disclosure@vulncheck.com

🔗 参考链接