CVE-2026-104038 (GCVE-0-2026-104038)

Vulnerability from cvelistv5 – Published: 2026-10-06 00:12 – Updated: 2026-10-07 20:08
VLAI
Title
Sssd: sssd: denial of service via missing sid extension in certificate mapping
Summary
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.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 20:08 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
redhat CNA under the redhat root
CNA scorecard B 81/100 over 1001 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-104038 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2478980 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-10-05 23:50
Credits
This issue was discovered by Found by AISLE in partnership with Red Hat.
Show details on NVD website
To clipboard 

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