Uninitialized Stack Memory Exposure in MongoDB for Authenticated Users
CVE-2026-4147

7.1HIGH

Key Information:

Vendor

MongoDB
Status
Mongodb Server
Vendor
CVE Published:
17 March 2026

What is CVE-2026-4147?

An authenticated user with the read role in MongoDB can exploit a vulnerability to access limited amounts of uninitialized stack memory. This occurs through specially-crafted commands issued to the filemd5 function, potentially exposing sensitive information that should remain inaccessible. Proper safeguards and updates are recommended to mitigate this risk.

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Affected Version(s)

MongoDB Server 8.2 < 8.2.6

MongoDB Server 8.0 < 8.0.20

MongoDB Server 7.0 < 7.0.31

References

https://jira.mongodb.org/browse/SERVER-119317

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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