---
id: CVE-2026-97176
title: >-
  A flaw was found in the Level of Authentication enforcement mechanism of
  Keycloak, an identity and access management solution
summary: >-
  A flaw was found in the Level of Authentication enforcement mechanism of
  Keycloak, an identity and access management solution. The issue occurs when a
  client specifically requires a higher security level for a user who already
  has an act…
severity: medium
cvss: 4.2
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-862
vendor: Red Hat
product: keycloak-services
affected:
  - keycloak-services (all versions)
  - rhbk/keycloak-rhel9 (all versions)
  - keycloak-services
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T14:51:56.593'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97176'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97176'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2539964'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97176.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97176'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97176'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-24T06:39:26.617Z'
---

## Overview

A flaw was found in the Level of Authentication enforcement mechanism of Keycloak, an identity and access management solution. The issue occurs when a client specifically requires a higher security level for a user who already has an active session at a lower level. Due to a logic error in how session re-evaluations are handled, Keycloak may incorrectly issue a token at the lower security level instead of enforcing the required higher level, potentially allowing unauthorized access to sensitive resources that rely on these security claims.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Build of Keycloak · no fix planned: Red Hat Build of Keycloak · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97176.json)