---
id: CVE-2026-76578
title: A flaw was found in FreeIPA
summary: >-
  A flaw was found in FreeIPA. The self-managed OTP token ACI does not require
  authentication and does not restrict which attributes may be added alongside
  the token entry. An unauthenticated LDAP client can exploit this, combined
  with a r…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-306
vendor: Red Hat
product: ipa
affected:
  - ipa (all versions)
  - ipa
  - ipa (all versions)
  - 'idm:client/ipa (all versions)'
  - ipa (all versions)
  - ipa (all versions)
published: '2026-09-07'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T19:08:15.590'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76578'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-76578'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2519522'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-76578.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-76578'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76578'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - exploit-available
epss: 0.00453
epssPercentile: 0.38587
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-09-08T13:58:12.782701Z'
ingestedAt: '2026-09-08T15:33:26.977Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/BrainBob/CVE-2026-76578'
  checkedAt: '2026-09-21T15:30:40.973Z'
exploitAvailable: true
---

## Overview

A flaw was found in FreeIPA. The self-managed OTP token ACI does not require authentication and does not restrict which attributes may be added alongside the token entry. An unauthenticated LDAP client can exploit this, combined with a related flaw in the underlying directory server's ACI evaluation (tracked separately), to create an arbitrary attacker-controlled Kerberos principal and have it added to the administrators group. This allows a remote, unauthenticated attacker to obtain genuine FreeIPA administrator-group membership and perform administrative operations against the directory and, on SID-enabled deployments, other IdM services.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Critical · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-07 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-76578.json)