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CVE-2026-2229 undici is vulnerable to Unhandled Exception in undici WebSocket Client Due to Invalid server_max_window_bits Validation

🗓️ 12 Mar 2026 20:27:05Reported by openjsType 
vulnrichment
 vulnrichment🔗 github.com👁 3 Views

undici WebSocket client crash from unhandled RangeError caused by invalid server_max_window_bits

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IBM Security Bulletins		Security Bulletin: Platform Navigator in IBM Cloud Pak for Integration is vulnerable to multiple vulnerabilities in undici
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IBM Security Bulletins		Security Bulletin: The Analyst Workflow App for IBM QRadar SIEM is vulnerable to using components with known vulnerabilities
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ATTACKERKB		CVE-2026-2229
12 Mar 202620:27
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Tenable Nessus		Amazon Linux 2023 : nodejs20, nodejs20-devel, nodejs20-full-i18n (ALAS2023-2026-1524)
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Tenable Nessus		Amazon Linux 2023 : nodejs24, nodejs24-devel, nodejs24-full-i18n (ALAS2023-2026-1526)
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12 Mar 2026 20:27Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.17.5
EPSS0.00175
SSVC
CWE-1284CWE-248
undiciwebsocketclientcrashrangeerrorserver_max_window_bitspermessage_deflate
3