EUVD-2026-45226Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Network-accessible admin API requires low-privilege admin auth (PR:L); only specific credential values exposed, so C:L; no integrity or availability impact.
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
1DescriptionCVE.org
A flaw was found in the authentication configuration endpoint of the keycloak-services component, which is the core engine for Red Hat Build of Keycloak identity and access management. The issue occurs because the system fails to mask sensitive configuration values, such as reCAPTCHA secret keys, when they are requested by administrators with view-only permissions. This can lead to the exposure of third-party service credentials to unauthorized personnel or through administrative logs.
AnalysisAI
Sensitive credential exposure in the keycloak-services authentication configuration endpoint allows view-only administrators to retrieve unmasked third-party service secrets, such as reCAPTCHA secret keys, through the administrative API. Affected deployments include Red Hat Build of Keycloak, Red Hat Single Sign-On 7, Red Hat Data Grid 8, and the JBoss EAP Expansion Pack. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated Keycloak administrative session with at least view-only realm-admin permissions (PR:L per CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N) scores 4.3 Medium, accurately reflecting that exploitation requires low-privilege authenticated access and produces only limited confidentiality impact per the scoring rubric. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained or been legitimately granted a Keycloak administrative account with view-only realm permissions - via phishing, credential stuffing, or insider access - sends an authenticated GET request to the authentication configuration endpoint in the Keycloak admin API. The response returns the full configuration blob including the reCAPTCHA secret key in plaintext. … |
| Remediation | The primary remediation is to apply the vendor-released patch once available via the Red Hat Customer Portal at https://access.redhat.com/security/cve/CVE-2026-16104; no specific fixed version number is confirmed in the available data at the time of this analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Red Hat Build Of Keycloak
View allAuthorization bypass in the Keycloak Policy Enforcer allows any authenticated user to circumvent all enforced access con
Signature-verification bypass in Keycloak (and Red Hat's Keycloak-based products such as Red Hat Single Sign-On 7 and Re
Open redirect in Red Hat build of Keycloak permits remote attackers to send victims to attacker-controlled hosts by abus
Identity linking bypass in Red Hat build of Keycloak allows an attacker controlling a second account on the same upstrea
Authenticated users with uma_protection role in Red Hat Keycloak can bypass User-Managed Access policy validation to gai
Privilege escalation in Keycloak (Red Hat Build of Keycloak) lets an authenticated delegated admin with management right
Denial of service in Red Hat build of Keycloak allows remote unauthenticated attackers to exhaust CPU and worker threads
Denial of Service in Red Hat Build of Keycloak allows unauthenticated remote attackers to exhaust server resources by su
Session fixation in Keycloak's login-actions endpoints allows remote attackers to hijack authenticated sessions and take
Authorization code forgery in Red Hat Keycloak enables unauthenticated attackers to escalate privileges to admin-level a
Stored Cross-Site Scripting in Red Hat Build of Keycloak lets an authenticated administrator with `manage-client` permis
Open redirect in Red Hat Build of Keycloak allows authenticated attackers with control over another path on the same web
Same weakness CWE-522 – Insufficiently Protected Credentials
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today