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TI-2026-12457 Aliases CVE-2026-14781GHSA-c96p-56gh-3pvw

Keycloak-services: keycloak-services: oidc email_verified claim incorrectly applied to userinfo email

Priority LOW 22CWE-1288Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

A flaw exists in the org.keycloak.broker.oidc package where the OIDC broker incorrectly synchronizes the email_verified claim. When an OIDC identity provider is configured with trustEmail=true and the userinfo endpoint is enabled, Keycloak retrieves the email address from the userinfo response but retrieves the email_verified status exclusively from the id_token. The root cause is a lack of validation ensuring that the email_verified claim in the id_token actually refers to the email address returned by the userinfo endpoint. If these two sources return different email addresses, the id_token's email_verified=true claim is blindly applied to the userinfo email. Exploitation Conditions: The OIDC identity provider must have trustEmail set to true (non-default). The userinfo endpoint must be enabled (default). The attacker must control or have compromised the upstream OIDC provider. Concrete Impact: Mark arbitrary email addresses as verified in the Keycloak database. Bypass email-based security controls or verification workflows. Potential account takeover if the application relies solely on the email_verified flag from the IdP to link accounts.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00279 20th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat Build of Keycloak——Not affectedCNA
Red HatRed Hat Build of Keycloak——No fix listedCNA
Red HatRed Hat Build of Keycloak——Not affectedCNA
Red HatRed Hat Data Grid 8——Not affectedCNA
Red HatRed Hat JBoss Enterprise Application Platform Expansion Pack——Not affectedCNA
Red HatRed Hat Single Sign-On 7——Not affectedCNA
  • Red Hat Build of Keycloak VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Build of Keycloak VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Build of Keycloak VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Data Grid 8 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat JBoss Enterprise Application Platform Expansion Pack VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Single Sign-On 7 VendorRed Hat Affected — Fixed in — Not affected CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:-:*:*:*not specified by NVDVulnerableRed Hat
  • cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:-:*:*:* Versions not specified by NVD Vulnerable ·Red Hat

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Build of KeycloakAffectedNo fix yet
Not affected: 4 products
  • Red Hat Build of Keycloak
  • Red Hat Data Grid 8
  • Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat Single Sign-On 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-14781
  2. 2026-10-03 Alias added: GHSA-c96p-56gh-3pvw

References

Advisory 2

  • TI-2026-02223 Keycloak: keycloak: unauthorized authentication via disabled saml identity provider CVSS 3.1HIGH 8.1
  • TI-2024-01049 Keycloak: path transversal in redirection validation CVSS 3.1HIGH 8.1
  • TI-2026-13740 Keycloak-services: keycloak-services: saml idp-initiated broker login bypasses link-only restriction CVSS 3.1CRITICAL 9.8
  • TI-2026-13741 Keycloak-services: keycloak-services: saml broker metadata import disables response signature validation CVSS 3.1CRITICAL 9.1
  • TI-2026-13106 Keycloak-services: keycloak-services: dcr protocol mapper type-swap policy bypass allows privilege escalation CVSS 3.1HIGH 8.8
  • TI-2026-02631 Authentication bypass in Red Hat build of Keycloak 26.2 CVSS 3.1HIGH 8.8
See all 110 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences