Description
A flaw was found in the Keycloak keycloak-services component, which handles the management of identity providers. The issue occurs when a delegated administrator updates an OIDC identity provider using a masked client secret sentinel value. Due to improper validation, Keycloak reuses the existing real secret even if security-sensitive fields like the token URL have been changed, allowing an attacker to redirect and capture the secret.
Published: 2026-07-17
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sun, 02 Aug 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat build Of Keycloak
Redhat data Grid
Redhat jboss Enterprise Application Platform Expansion Pack
Redhat single Sign On
Vendors & Products Redhat build Of Keycloak
Redhat data Grid
Redhat jboss Enterprise Application Platform Expansion Pack
Redhat single Sign On

Sat, 18 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Fri, 17 Jul 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 17 Jul 2026 12:00:00 +0000

Type Values Removed Values Added
Description A flaw was found in the Keycloak keycloak-services component, which handles the management of identity providers. The issue occurs when a delegated administrator updates an OIDC identity provider using a masked client secret sentinel value. Due to improper validation, Keycloak reuses the existing real secret even if security-sensitive fields like the token URL have been changed, allowing an attacker to redirect and capture the secret.
Title Keycloak-services: keycloak-services: oidc idp update reuses masked client secret after token url change
First Time appeared Redhat
Redhat build Keycloak
Redhat jboss Data Grid
Redhat jbosseapxp
Redhat red Hat Single Sign On
Weaknesses CWE-1288
CPEs cpe:/a:redhat:build_keycloak:
cpe:/a:redhat:jboss_data_grid:8
cpe:/a:redhat:jbosseapxp
cpe:/a:redhat:red_hat_single_sign_on:7
Vendors & Products Redhat
Redhat build Keycloak
Redhat jboss Data Grid
Redhat jbosseapxp
Redhat red Hat Single Sign On
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N'}


Subscriptions

Redhat Build Keycloak Build Of Keycloak Data Grid Jboss Data Grid Jboss Enterprise Application Platform Expansion Pack Jbosseapxp Red Hat Single Sign On Single Sign On
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-07-17T14:53:16.118Z

Reserved: 2026-07-16T09:20:43.530Z

Link: CVE-2026-15943

cve-icon Vulnrichment

Updated: 2026-07-17T14:53:11.389Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-17T12:17:03.313

Modified: 2026-08-09T14:56:07.767

Link: CVE-2026-15943

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-16T06:27:49Z

Links: CVE-2026-15943 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-02T20:36:09Z

Weaknesses
  • CWE-1288

    Improper Validation of Consistency within Input