Is CVE-2026-109082 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-109082 being exploited in the wild.

How severe is CVE-2026-109082?

Medium severity, with a CVSS score of 6.8, published 12 October 2026.

Is there a fix for CVE-2026-109082?

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-2026-109082 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-109082?

Check whether you run Keycloak. 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-2026-109082: Keycloak CIBA authorization bypass in keycloak-services

CVE-2026-109082 · Severity: medium · CVSS 6.8 · Published 2026-10-12

Keycloak is an identity management system that handles user authentication and access control for enterprise applications. A flaw in its Client-Initiated Backchannel Authentication (CIBA) feature allows attackers to bypass security controls and trick users into granting unauthorized access to their accounts. An attacker could gain full access to a victim's account without needing the client application's secret credentials.

Technologies: Keycloak. Vendors: Keycloak.

Quick answers

Is CVE-2026-109082 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-109082 being exploited in the wild.
How severe is CVE-2026-109082?: Medium severity, with a CVSS score of 6.8, published 12 October 2026.
Which products and versions are affected?: Keycloak Keycloak.
Is there a fix for CVE-2026-109082?: 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-2026-109082 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-109082?: Check whether you run Keycloak. 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 an improper authentication flaw (CWE-287) in the keycloak-services component's CIBA implementation. Keycloak fails to enforce the confidential-only client requirement, allowing public clients to initiate the CIBA flow. An attacker must trick a user into approving a push notification on their authentication device, but successful exploitation grants the attacker a full user access token.

Affected products

Keycloak Keycloak

Timeline

2026-10-12: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.