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[ CVE-2026-96297 · Published 13 Oct 2026 ]

Vulnerability in MongoDB Server

CVSS 6.5 EPSS <1%2 agency advisoriesFix available

[ Description ]Official description

Use of freed memory in the aggregation feature of MongoDB Server can cause the server to read data from a memory area after it has been released. When an internal aggregation stage is combined with a batch size of 0, the server may read from memory that is no longer in use. Because that memory can be reused for other data before it is read, query results returned to the client may contain unrelated data from the server process. Depending on the state of memory at the time, the server process may also terminate unexpectedly. The behavior can occur when an authenticated user with read privileges runs an aggregate command that combines these two settings.

[ 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