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[ CVE-2026-96299 · Published 13 Oct 2026 ]

Vulnerability in MongoDB Server

CVSS 6.5 EPSS <1%2 agency advisoriesFix available

[ Description ]Official description

A security issue was discovered in MongoDB mongos (the sharded cluster router) where an authenticated user with readWrite privileges could crash the mongos process by crafting a specially formed aggregation pipeline. The issue leverages an internal aggregation stage that lacks proper authorization checks despite being intended for internal use, allowing a subsequent stage to be forced to execute on the router under conditions it was not designed to handle. This results in an unhandled fatal error that causes the mongos process to immediately abort, resulting in denial of service for all clients routed through the affected mongos instance.

[ Fixes ]Fixes and patches

[ Advisories ]Government CERT advisories

  • CERT-FRCERTFR-2026-AVI-1304

    Multiple vulnerabilities in MongoDB Server Translated from French

    Multiple vulnerabilities have been discovered in MongoDB Server. They allow an attacker to cause remote arbitrary code execution and remote denial of service.

    CVE-2026-104004CVE-2026-96297CVE-2026-104005+2 more CVEs
  • BSI CERT-BundWID-SEC-2026-3924

    MongoDB: Multiple vulnerabilities Translated from German

    CVE-2026-96299CVE-2026-104004CVE-2026-103965+2 more CVEs

[ References ]References