Medium severity5.9NVD Advisory· Published Oct 6, 2026

CVE-2026-104038

Description

A flaw was found in sssd. A remote attacker can cause a denial of service (DoS) by submitting a certificate that lacks an expected Security Identifier (SID) extension. In deployments configured with SID-based certificate mapping rules, the service fails to verify the presence of the extension before processing it, causing the process to crash during authentication or lookup operations.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

SSSD/Sssdllm-fuzzy

Patches

Vulnerability mechanics

References

access.redhat.com/security/cve/CVE-2026-104038nvd
bugzilla.redhat.com/show_bug.cginvd

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cvss	0.384
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000