CVE-2026-104038

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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-104038
https://bugzilla.redhat.com/show_bug.cgi?id=2478980
https://bugzilla.redhat.com/show_bug.cgi?id=2478980

Configurations

No configuration.

History

07 Oct 2026, 21:17

Type	Values Removed	Values Added
References	~~() https://bugzilla.redhat.com/show_bug.cgi?id=2478980 -~~	() https://bugzilla.redhat.com/show_bug.cgi?id=2478980 -

06 Oct 2026, 01:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-06 01:16

Updated : 2026-10-07 21:17

NVD link : CVE-2026-104038

Mitre link : CVE-2026-104038

CVE.ORG link : CVE-2026-104038

JSON object : View

Products Affected

No product.

CWE

CWE-476

NULL Pointer Dereference

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