---
id: CVE-2023-6841
title: >-
  Keycloak: amount of attributes per object is not limited and it may lead to
  dos
summary: >-
  A denial of service vulnerability was found in keycloak where the amount of
  attributes per object is not limited,an attacker by sending repeated HTTP
  requests could cause a resource exhaustion when the application send back rows
  with lon…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-231
vendor: Red Hat
product: keycloak
affected:
  - keycloak < 24.0.0
  - keycloak
  - keycloak
  - keycloak
  - keycloak
  - keycloak
  - rh-sso7-keycloak (all versions)
  - keycloak
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2024-10-01T20:20:35.831984Z'
published: '2024-09-10'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T11:37:36.087Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-6841'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2023-6841'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2254714'
    label: RHBZ#2254714
tags:
  - cve.org
epss: 0.00736
epssPercentile: 0.54699
ingestedAt: '2026-11-05T21:36:00.813Z'
---

## Overview

A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited,an attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with long attribute values.

## Affected

- `keycloak < 24.0.0`
- `keycloak`
- `keycloak`
- `keycloak`
- `keycloak`
- `keycloak`
- `rh-sso7-keycloak (all versions)`
- `keycloak`

## Remediation

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

### Workarounds

This CVE is mitigated by the 'User Profile' functionality, which was introduced in Keycloak 24. This feature introduces additional validation which prevents this vulnerability from being exploited.