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  4. CVE 2026 19611 wildfly elytron orgwildflysecuritywildfly elytron
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Back to active CVEs
High · CVSS 7.4CVE-2026-19611

Wildfly-elytron: org.wildfly.security/wildfly-elytron-password-impl: wildfly-elytron: password keyspace reduction via nfkc fullwidth foldingCVE-2026-19611

Answer in brief

CVE-2026-19611 records a High severity (CVSS 7.4) vulnerability in Wildfly-elytron: org.wildfly.security/wildfly-elytron-password-impl: wildfly-elytron: password keyspace reduction via nfkc fullwidth folding. The current sources do not mark it as known exploited. The current feed maps Red Hat/jboss-eap-7/eap74-els-openjdk17-openshift-rhel8 (generic), Red Hat/jboss-eap-7/eap74-els-openjdk8-openshift-rhel8 (generic), Red Hat/keycloak/rhbk-openshift-rhel9 (generic), Red Hat/wildfly-elytron-password-impl (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 20, 2026Updated Sep 21, 2026Source checked Oct 4, 2026First seen by HOL Aug 20, 2026Material review Sep 21, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-173
Source
CVE List V5
Source checked
Oct 4, 2026
References
3 linked sources
Open source record

Key facts

Risk
High · CVSS 7.4
Exploitation
Not marked as known exploited
Affected software
4 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/jboss-eap-7/eap74-els-openjdk17-openshift-rhel8 (generic), Red Hat/jboss-eap-7/eap74-els-openjdk8-openshift-rhel8 (generic), Red Hat/keycloak/rhbk-openshift-rhel9 (generic), Red Hat/wildfly-elytron-password-impl (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/jboss-eap-7/eap74-els-openjdk17-openshift-rhel8generic*Not reported
Red Hat/jboss-eap-7/eap74-els-openjdk8-openshift-rhel8generic*Not reported
Red Hat/keycloak/rhbk-openshift-rhel9generic*Not reported
Red Hat/wildfly-elytron-password-implgeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/jboss-eap-7/eap74-els-openjdk17-openshift-rhel8, Red Hat/jboss-eap-7/eap74-els-openjdk8-openshift-rhel8, Red Hat/keycloak/rhbk-openshift-rhel9.
  2. 2Review the reported fix. Source-reported workaround: 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.

Evidence timeline and material changes

  1. Published upstream

    Aug 20, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 20, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

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