CVE-2026-19611

Impact

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 packages

This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.

Weakness classification

References

• NVD record
• CVE.org record
• https://access.redhat.com/errata/RHSA-2026:69440
• https://access.redhat.com/errata/RHSA-2026:69470
• https://access.redhat.com/errata/RHSA-2026:70257
• https://access.redhat.com/errata/RHSA-2026:83612
• https://access.redhat.com/security/cve/CVE-2026-19611
• https://bugzilla.redhat.com/show_bug.cgi?id=2514568