CVE-2026-19611
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|
Weaknesses
- CWE-173: Improper Handling of Alternate Encoding
Workarounds
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
References
- https://access.redhat.com/security/cve/CVE-2026-19611
- https://bugzilla.redhat.com/show_bug.cgi?id=2514568
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