Is CVE-2026-17526 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-17526 being exploited in the wild.

How severe is CVE-2026-17526?

High severity, with a CVSS score of 7.2, published 16 September 2026.

Is there a fix for CVE-2026-17526?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-17526 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-17526?

Check whether you run Keycloak at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-17526: Keycloak privilege escalation via impersonation role

CVE-2026-17526 · Severity: high · CVSS 7.2 · Published 2026-09-16

Keycloak is an open-source identity and access management system that organizations use to control user access and permissions across applications. A vulnerability allows users with the impersonation role to bypass security controls and assume the identity of realm administrators, gaining complete control over user accounts, application access, and permission settings. An attacker exploiting this could access sensitive data, create unauthorized accounts, or lock legitimate users out of critical systems.

Technologies: Keycloak. Vendors: Keycloak.

Quick answers

Is CVE-2026-17526 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-17526 being exploited in the wild.
How severe is CVE-2026-17526?: High severity, with a CVSS score of 7.2, published 16 September 2026.
Which products and versions are affected?: Keycloak <UNKNOWN>.
Is there a fix for CVE-2026-17526?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-17526 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-17526?: Check whether you run Keycloak at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a privilege escalation flaw in Keycloak's impersonation functionality that allows a user with the impersonation role to impersonate realm administrators without proper authorization checks. The root cause lies in insufficient validation of authorization boundaries when the impersonation feature is used. An attacker with the impersonation role can directly escalate privileges by impersonating an administrative account, gaining full realm-level control including user management, client configuration, and role assignment. No special network access or user interaction is required beyond having the impersonation role assigned. Patches are expected from Red Hat/Keycloak project, and users should monitor official security advisories for remediation.

Affected products

Keycloak Keycloak <UNKNOWN>

Timeline

2026-09-16: disclosed

References

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