---
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: fedoraproject
product: sssd
affected:
  - sssd = 2.12.0
  - openshift_container_platform = 4.0
  - enterprise_linux = 7.0
  - enterprise_linux = 8.0
  - enterprise_linux = 9.0
  - enterprise_linux = 10.0
published: '2026-10-06'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T15:35:28.760'
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
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104046.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-104046'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104046'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.0016
epssPercentile: 0.05152
ingestedAt: '2026-10-06T21:20:28.978Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-09T01:45:05.929929Z'
---

## 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.

## Affected

- `sssd = 2.12.0`
- `openshift_container_platform = 4.0`
- `enterprise_linux = 7.0`
- `enterprise_linux = 8.0`
- `enterprise_linux = 9.0`
- `enterprise_linux = 10.0`

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · 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, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-06 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104046.json)