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CVE-2026-19611
7.4 HIGH
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): High (H)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): High (H)
- Integrity (I): High (H)
- Availability (A): None (N)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): High (H)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): High (H)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): High (H)
- Modified Availability (MA): None (N)
Activity log
- Created & dismissed (no matching packages found) suggestion
Wildfly-elytron: org.wildfly.security/wildfly-elytron-password-impl: wildfly-elytron: password keyspace reduction via nfkc fullwidth folding
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.
References
Affected products
keycloak/rhbk-openshift-rhel9
wildfly-elytron-password-impl
jboss-eap-7/eap74-els-openjdk8-openshift-rhel8
jboss-eap-7/eap74-els-openjdk17-openshift-rhel8