CVE-2026-43678
Quick assessment
Affected
Apple swift-nio
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
未经身份验证的远程对等方可以通过在 WebSocket 握手完成后发送一个仅 11 字节的帧，导致任何基于 NIOWebSocket 的服务器（包括 Vapor 和 Hummingbird）崩溃，并终止所有活跃连接，直到进程重新启动。该漏洞已在 swift-nio 版本 2.101.0 中修复。
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I. Basic Information for CVE-2026-43678
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An unauthenticated remote peer can crash any NIOWebSocket-based server (including Vapor and Hummingbird) with a single 11-byte frame sent after a completed WebSocket handshake, dropping all active connections until the process restarts. This vulnerability is addressed in swift-nio version 2.101.0.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-43678
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-43678 (2)
Same Patch Batch · Apple · 2026-08-20 · 4 CVEs total
| CVE-2026-64773 | Container 1.2.0内存耗尽漏洞 | |
| CVE-2026-43798 | swift-nio-ssh 栈溢出漏洞 | |
| CVE-2026-64777 | Container 1.2.0以下版本路径遍历漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-43678
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