CVE-2026-18963 PUBLISHED

Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypass

Assigner: redhat
Reserved: 05.08.2026 Published: 18.08.2026 Updated: 19.08.2026

A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the required email verification link. This can result in the attacker gaining full control over target user accounts by directly setting new credentials.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS Score: 9.1

Product Status

Vendor Red Hat
Product Red Hat build of Keycloak 26.4
Versions Default: affected
  • unaffected from 26.4.15-1 to * (excl.)
Vendor Red Hat
Product Red Hat build of Keycloak 26.4
Versions Default: affected
  • unaffected from 26.4-23 to * (excl.)
Vendor Red Hat
Product Red Hat build of Keycloak 26.4
Versions Default: affected
  • unaffected from 26.4-23 to * (excl.)
Vendor Red Hat
Product Red Hat build of Keycloak 26.4.15
Versions Default: unaffected
Vendor Red Hat
Product Red Hat build of Keycloak 26.4.15
Versions Default: unaffected
Vendor Red Hat
Product Red Hat build of Keycloak 26.6
Versions Default: affected
  • unaffected from 26.6.6-1 to * (excl.)
Vendor Red Hat
Product Red Hat build of Keycloak 26.6
Versions Default: affected
  • unaffected from 26.6-12 to * (excl.)
Vendor Red Hat
Product Red Hat build of Keycloak 26.6
Versions Default: affected
  • unaffected from 26.6-12 to * (excl.)
Vendor Red Hat
Product Red Hat build of Keycloak 26.6.6
Versions Default: unaffected
Vendor Red Hat
Product Red Hat build of Keycloak 26.6.6
Versions Default: unaffected
Vendor Red Hat
Product Red Hat build of Keycloak 26.6.6
Versions Default: unaffected
Vendor Red Hat
Product Red Hat JBoss Enterprise Application Platform Expansion Pack
Versions Default: affected
Vendor Red Hat
Product Red Hat Single Sign-On 7
Versions Default: unaffected

Workarounds

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.

Credits

  • Red Hat would like to thank James Paremain for reporting this issue.

References

Problem Types

  • Weak Password Recovery Mechanism for Forgotten Password CWE