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Medium severity4.2NVD Advisory· Published Aug 11, 2026· Updated Sep 16, 2026

CVE-2026-18703

CVE-2026-18703

Description

An issue in MongoDB Server could allow a party with a valid client certificate and a corresponding user account to authenticate using a certificate-based authentication method, even when an administrator has configured the server to restrict authentication to other mechanisms. This could allow authentication through a method the administrator intended to disable.

AI Insight

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

Affected products

6
  • MongoDB/MongoDB4 versions
    cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*+ 3 more
    • cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*range: >=8.2.0,<=8.2.12
    • cpe:2.3:a:mongodb:mongodb:9.0.0:alpha0:*:*:-:-:*:*
    • cpe:2.3:a:mongodb:mongodb:9.0.0:alpha1:*:*:-:-:*:*
    • cpe:2.3:a:mongodb:mongodb:9.1.0:alpha0:*:*:-:-:*:*
  • MongoDB/Serverllm-fuzzy
  • osv-coords
    pkg:bitnami/mongodb
    Range: >= 8.2.0, < 8.3.8

Patches

Vulnerability mechanics

References

1

News mentions

1