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

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.

Timeline

Scores

EPSS (exploitation in 30 days)

1.0% · top 36% of all CVEs (14 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.

Affected products

• Red Hat · Red Hat Build of Apache Camel 3.33.3.SP2

  • unaffected 2.8.4.Final-redhat-00002 – < *

• Red Hat · Red Hat Build of Debezium 3.6

  All versions: unaffected

• Red Hat · Red Hat build of Keycloak 26.4

  • unaffected 26.4.17-2 – < *

• Red Hat · Red Hat build of Keycloak 26.4

  • unaffected 26.4-29 – < *

• Red Hat · Red Hat build of Keycloak 26.4

  • unaffected 26.4-30 – < *

• Red Hat · Red Hat build of Keycloak 26.4.17

  All versions: unaffected

• Red Hat · Red Hat build of Keycloak 26.4.17

  All versions: unaffected

• Red Hat · Red Hat build of Keycloak 26.6

  • unaffected 26.6.8-2 – < *

• Red Hat · Red Hat build of Keycloak 26.6

  • unaffected 26.6-24 – < *

• Red Hat · Red Hat build of Keycloak 26.6

  • unaffected 26.6-24 – < *

• Red Hat · Red Hat build of Keycloak 26.6.8

  All versions: unaffected

• Red Hat · Red Hat build of Keycloak 26.6.8

  All versions: unaffected

• Red Hat · Red Hat build of Quarkus 3.27.5.SP2

  All versions: unaffected

• Red Hat · Red Hat build of Quarkus 3.33.3.SP2

  All versions: unaffected

• Red Hat · Red Hat JBoss Enterprise Application Platform 8.1

  All versions: unaffected

• Red Hat · Red Hat build of Apache Camel 4 for Quarkus 3

  All versions: affected

• Red Hat · Red Hat build of Debezium 3

  All versions: affected

• Red Hat · Red Hat Data Grid 8

  All versions: affected

• Red Hat · Red Hat JBoss Enterprise Application Platform 7

  All versions: affected

• Red Hat · Red Hat JBoss Enterprise Application Platform 7

  All versions: affected

• Red Hat · Red Hat JBoss Enterprise Application Platform 7

  All versions: affected

• Red Hat · Red Hat JBoss Enterprise Application Platform Expansion Pack

  All versions: unaffected

• Red Hat · Red Hat Single Sign-On 7

  All versions: affected

What to do

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.

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2026-63478 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-19611](https://cveledger.app/badge/CVE-2026-19611.svg)](https://cveledger.app/cve/CVE-2026-19611)

Record last updated 6 Nov 2026, 17:27 UTC.