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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Red Hat Red Hat build of Keycloak 26.4 affected
Version Status Constraints
26.4-23 unaffected < *
Red Hat Red Hat build of Keycloak 26.4 affected
Version Status Constraints
26.4.15-1 unaffected < *
Red Hat Red Hat build of Keycloak 26.4 affected
Version Status Constraints
26.4-23 unaffected < *
Red Hat Red Hat build of Keycloak 26.6 affected
Version Status Constraints
26.6-12 unaffected < *
Red Hat Red Hat build of Keycloak 26.6 affected
Version Status Constraints
26.6.6-1 unaffected < *
Red Hat Red Hat build of Keycloak 26.6 affected
Version Status Constraints
26.6-12 unaffected < *
Red Hat Red Hat build of Keycloak 26.6.6 unaffected —
Red Hat Red Hat build of Keycloak 26.6.6 unaffected —
Red Hat Red Hat build of Keycloak 26.6.6 unaffected —
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack affected —
Red Hat Red Hat Single Sign-On 7 unaffected —

No data.

No data.

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No data.

Project Subscriptions

Vendors Products
Redhat Subscribe
Build Keycloak Subscribe
Jbosseapxp Subscribe
Red Hat Single Sign On Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

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.

References
Link Providers
https://access.redhat.com/errata/RHSA-2026:56519 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:56523 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:56524 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2026-18963 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2511595 cve-icon cve-icon
History

Tue, 18 Aug 2026 21:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:build_keycloak:26.4::el9
cpe:/a:redhat:build_keycloak:26.6::el9
References

Tue, 18 Aug 2026 20:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:build_keycloak: cpe:/a:redhat:build_keycloak:26.6
References

Tue, 18 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypass
First Time appeared Redhat
Redhat build Keycloak
Redhat jbosseapxp
Redhat red Hat Single Sign On
Weaknesses CWE-640
CPEs cpe:/a:redhat:build_keycloak:
cpe:/a:redhat:jbosseapxp
cpe:/a:redhat:red_hat_single_sign_on:7
Vendors & Products Redhat
Redhat build Keycloak
Redhat jbosseapxp
Redhat red Hat Single Sign On
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-18T20:49:45.941Z

Reserved: 2026-08-05T15:00:40.360Z

Link: CVE-2026-18963

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-18T17:16:57.083

Modified: 2026-08-18T21:16:34.360

Link: CVE-2026-18963

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-18T19:00:12Z

Weaknesses