---
id: CVE-2026-104040
title: A flaw was found in SSSD
summary: >-
  A flaw was found in SSSD. When configured with the Entra ID identity provider,
  input lookup names containing single quotes are not properly escaped before
  being included in Microsoft Graph Open Data Protocol (OData) queries. A
  low-privil…
severity: medium
cvss: 4.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L'
cwe:
  - CWE-140
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: '2026-10-16'
sourceUpdated: '2026-10-16T21:19:16.957'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104040'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-104040'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2478915'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104040.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-104040'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104040'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00124
epssPercentile: 0.02123
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-06T13:00:50.356306Z'
ingestedAt: '2026-10-06T01:38:44.803Z'
---

## Overview

A flaw was found in SSSD. When configured with the Entra ID identity provider, input lookup names containing single quotes are not properly escaped before being included in Microsoft Graph Open Data Protocol (OData) queries. A low-privileged local user can exploit this flaw by submitting a crafted search request, altering query filters to broaden user or group searches. This can lead to information disclosure by retrieving unintended directory objects, as well as a Denial of Service (DoS) through excessive processing and cache population.

## 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 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104040.json)