---
id: CVE-2026-8922
title: A flaw was found in Keycloak
summary: >-
  A flaw was found in Keycloak. When both realm-level and client-level
  `notBefore` revocation policies are configured, Keycloak's OpenID Connect
  (OIDC) Introspection feature fails to properly honor the realm-level policy.
  This allows token…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-303
published: '2026-05-19'
updated: '2026-06-26'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-8922'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:25097'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:25098'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:30049'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:30050'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-8922'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2479586'
    label: secalert@redhat.com
tags:
  - nvd
epss: 0.00281
epssPercentile: 0.20829
ingestedAt: '2026-06-26T16:43:13.648Z'
---

## Overview

A flaw was found in Keycloak. When both realm-level and client-level `notBefore` revocation policies are configured, Keycloak's OpenID Connect (OIDC) Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially leading to unauthorized access or continued session validity. This could impact the security of systems utilizing Keycloak for identity and access management.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.