CVE-2026-5447

Published Apr 9, 2026·Updated Jun 17, 2026

NVD Description

Heap buffer overflow in CertFromX509 via AuthorityKeyIdentifier size confusion. A heap buffer overflow occurs when converting an X.509 certificate internally due to incorrect size handling of the AuthorityKeyIdentifier extension.

Public Exploits & PoCs1 found

[POC] CVE-2026-54477 — CVE-2026-54477

CVE-2026-54477: Admin Panel Missing Security Headers (clickjacking/XSS) - Gardyn (ICSA-26-183-03)

CVSS Vector

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

References

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