A flaw was found in WildFly Elytron. Password hashing and verification normalize input with Unicode NFKC, which can collapse fullwidth characters to ASCII equivalents. A remote attacker can more easily guess affected passwords by using an ASCII-only dictionary against accounts whose passwords were intended to include those non-ASCII characters, leading to unauthorized access.

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

CWE-173

https://access.redhat.com/security/cve/CVE-2026-19611

https://bugzilla.redhat.com/show_bug.cgi?id=2514568

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