H1-3556769 — Vulnetix

H1-3556769 PUBLISHED CVSS 7.5 HIGH

Incomplete fix for CVE-2026-21637: loadSNI() in _tls_wrap.js lacks try/catch leading to Remote DoS

Risk Scores

CVSS 3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

Incomplete fix for CVE-2026-21637: loadSNI() in _tls_wrap.js lacks try/catch leading to Remote DoS (hackerone)
Incomplete fix for CVE-2026-21637: loadSNI() in _tls_wrap.js lacks try/catch leading to Remote DoS (hackerone)

Timeline

Apr 23, 2026 CVE Published
Apr 23, 2026 PoC Published

References

Incomplete fix for CVE-2026-21637: loadSNI() in _tls_wrap.js lacks try/catch leading to Remote DoS advisory

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