Advisory severityMedium5.5Red Hat Linux

Medium [CVE-2026-17048] Vault-resolved rotated client secrets leaked via Admin REST API

This medium-severity Red Hat Linux advisory covers CVE-2026-17048 affecting Red Hat build of Keycloak 26.6.6.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-17048 Source published Jul 24, 2026Source updated Jul 21, 2026

VulniPulse record published Jul 24, 2026Record updated Aug 11, 2026

CVE-2026-17048

Affected products & platforms

Red Hat LinuxUnclassified

Open source advisory

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Summary

A flaw was found in the Keycloak Admin REST API, which is used to manage security realms and clients. The issue occurs when the system processes requests for rotated client secrets that are stored in a secure vault.

Due to improper boundary enforcement, a delegated administrator with view-only permissions can retrieve the actual resolved secret instead of the vault placeholder, leading to the exposure of sensitive credentials.

The Red Hat Product Security team has assessed the severity of this vulnerability as Moderate, given that exploitation requires high-privileged administrative access and the use of a non-default preview feature. Successful exploitation allows an attacker to disclose sensitive vault-backed rotated client secrets.

The vulnerability's root cause is a failure to properly mask resolved vault values in the rotated client secret API endpoint. Weakness: CWE-200.

Affected Red Hat products: Red Hat build of Keycloak 26.6; Red Hat build of Keycloak 26.6.6. Red Hat fixing advisory: RHSA-2026:56524, RHSA-2026:56523.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 16 days ago·verify at source

Fixed versions

rhbk/keycloak-operator-bundle:26.6.6-1
rhbk/keycloak-rhel9:26.6-12
rhbk/keycloak-rhel9-operator:26.6-12
keycloak-services
rhbk-keycloak-rhel9/rhbk-keycloak-rhel9
RHSA-2026:56524
RHSA-2026:56523

Official advisory · high-confidence parse· fetched 16 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

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.

Official advisory · high-confidence parse· fetched 16 days ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Red Hat Security Data APIofficial
Official vendor source used to discover this advisory; it remains the authority for affected products and remediation. Discovered from the machine-readable feed https://access.redhat.com/hydra/rest/securitydata/cve.json; this link opens the Red Hat Linux advisory index instead of the raw feed document.
Red Hat Linux
Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Red Hat Linux
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-17048NVD CVE.org MITRE

Discussion(0)

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