An out-of-bounds write in the connection-monitoring logic of the MongoDB C Driver may allow an unauthenticated party who controls name resolution and the responses of the hosts named in a client's connection string to write beyond the end of a heap buffer. This may cause the application using the driver to terminate unexpectedly.

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History

Thu, 24 Sep 2026 16:00:00 +0000

Type Values Removed Values Added
Description An out-of-bounds write in the connection-monitoring logic of the MongoDB C Driver may allow an unauthenticated party who controls name resolution and the responses of the hosts named in a client's connection string to write beyond the end of a heap buffer. This may cause the application using the driver to terminate unexpectedly.
Title Heap buffer overflow via mid-scan command list growth in client topology monitoring
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-09-24T15:51:15.196Z

Reserved: 2026-09-23T15:45:49.685Z

Link: CVE-2026-96746

cve-icon Vulnrichment

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cve-icon NVD

Status : Received

Published: 2026-09-24T16:17:27.460

Modified: 2026-09-24T16:17:27.460

Link: CVE-2026-96746

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses