CVE-2026-104047: SSSD query injection in Microsoft Entra ID lookups

CVE-2026-104047 · Severity: medium · CVSS 5.3 · Published 2026-10-06

SSSD (System Security Services Daemon) is a local authentication and directory access service used on Linux systems. When configured to integrate with Microsoft Entra ID, the service fails to properly validate user-supplied search input before using it in directory queries. A local user with low-level access can craft malicious search requests to bypass query logic and retrieve sensitive directory information they should not have access to.

Technologies: Red Hat SSSD. Vendors: Red Hat.

Quick answers

Is CVE-2026-104047 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-104047 being exploited in the wild.
How severe is CVE-2026-104047?
Medium severity, with a CVSS score of 5.3, published 6 October 2026.
Which products and versions are affected?
Red Hat SSSD.
Is there a fix for CVE-2026-104047?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-104047 attacked?
It is attacked with local access.
Am I affected by CVE-2026-104047?
Check whether you run Red Hat SSSD. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A CWE-140 improper delimiter neutralization flaw exists in SSSD's Microsoft Entra ID provider, where search inputs are not sanitized before incorporation into LDAP-style directory query filters. An authenticated local user (low privilege) can submit a crafted lookup request to manipulate query filters and retrieve unauthorized directory records or cause processing overhead, without requiring user interaction or remote network access. Confidentiality and integrity impact are limited; no code execution or privilege escalation is possible.

Affected products

  • Red Hat SSSD

Timeline

  • 2026-10-06: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.