---
id: CVE-2026-104046
title: A flaw was found in SSSD (System Security Services Daemon)
summary: >-
  A flaw was found in SSSD (System Security Services Daemon). When Identity
  Provider (IdP) authentication is enabled, pre-authentication requests retain
  state in memory without being cleared or timed out. A local attacker can
  repeatedly in…
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
vendor: Red Hat
product: sssd
affected:
  - sssd (all versions)
  - sssd
  - sssd (all versions)
  - sssd (all versions)
  - sssd (all versions)
  - openshift/ose-rhel-coreos-8 (all versions)
  - openshift/ose-rhel-coreos-9 (all versions)
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T21:17:04.300'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104046'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-104046'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2478662'
    label: secalert@redhat.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T21:20:28.978Z'
---

## Overview

A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is enabled, pre-authentication requests retain state in memory without being cleared or timed out. A local attacker can repeatedly initiate authentication flows without completing them, causing unbounded memory consumption. This memory exhaustion can lead to a Denial of Service (DoS) by degrading or terminating SSSD authentication services.

## Remediation

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