CVE-2026-104040: Sssd: sssd: information disclosure via odata injection in entra id lookups

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-10-06 · updated 2026-10-31
Weakness: CWE-140

Description

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 products

[UNKNOWN] sssd: 2.12.0 (and their updates)
Red Hat Enterprise Linux: 7.0, 8.0, 9.0, 10.0 (and their updates)
Red Hat OpenShift Container Platform 4.18: 4.0 (and their updates)
Red Hat OpenShift Container Platform 4.18: all versions
Red Hat Enterprise Linux 10: all versions
Red Hat Enterprise Linux 7: all versions
Red Hat Enterprise Linux 8: all versions
Red Hat Enterprise Linux 9: all versions
Red Hat OpenShift Container Platform 5: all versions

References

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