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2 vulnerabilities found for swift-nio by Apple
CVE-2026-43678 (GCVE-0-2026-43678)
Vulnerability from nvd – Published: 2026-08-20 18:57 – Updated: 2026-08-20 21:10
VLAI
EPSS
VEX
Summary
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.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 19:44 UTC
CWE
- 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.
- CWE-20 - Improper Input Validation
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
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CVE-2026-43678 (GCVE-0-2026-43678)
Vulnerability from cvelistv5 – Published: 2026-08-20 18:57 – Updated: 2026-08-20 21:10
VLAI
EPSS
VEX
Summary
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.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 19:44 UTC
CWE
- 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.
- CWE-20 - Improper Input Validation
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
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