---
id: CVE-2025-3910
title: A flaw was found in Keycloak
summary: >-
  A flaw was found in Keycloak. The org.keycloak.authorization package may be
  vulnerable to circumventing required actions, allowing users to circumvent
  requirements such as setting up two-factor authentication.
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'
cwe:
  - CWE-287
vendor: redhat
product: build_of_keycloak
affected:
  - 'build_of_keycloak >= 26.0, < 26.0.11'
patched:
  - build_of_keycloak 26.0.11
published: '2025-04-29'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T06:17:00.497'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-3910'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2025:4335'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:4336'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2025-3910'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2361923'
    label: secalert@redhat.com
  - url: 'https://github.com/keycloak/keycloak/issues/39349'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-3910.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2025-3910'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-3910'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2025-04-30T15:52:31.582697Z'
epss: 0.00424
epssPercentile: 0.36234
ingestedAt: '2026-09-21T06:32:37.144Z'
---

## Overview

A flaw was found in Keycloak. The org.keycloak.authorization package may be vulnerable to circumventing required actions, allowing users to circumvent requirements such as setting up two-factor authentication.

## Affected

- `build_of_keycloak >= 26.0, < 26.0.11`

## Remediation

Upgrade past the affected range:

- `build_of_keycloak 26.0.11`

## Vendor advisories

- **RHSA-2025:4335** · Red Hat · fixed in: Red Hat build of Keycloak 26.0 · released 2025-04-29 · [advisory](https://access.redhat.com/errata/RHSA-2025:4335)
- **RHSA-2025:4336** · Red Hat · fixed in: Red Hat Build of Keycloak · released 2025-04-29 · [advisory](https://access.redhat.com/errata/RHSA-2025:4336)