CVE-2026-82071: Insufficient Validation of Storage Engine Configuration Options in MongoDB Server Leads to Out-of-Bounds Write
Insufficient validation of storage engine configuration options in MongoDB Server allows an authenticated user with write privileges to supply crafted parameters during collection creation that override internal storage metadata. This results in an out-of-bounds memory write in the server process, causing a denial of service via server crash, with potential for further impact including arbitrary code execution.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An authenticated user with write privileges is required. The issue is triggered by supplying crafted storage engine configuration parameters when creating a collection.
Are deployments affected by default?
Exploitation requires a user to create a collection with crafted parameters; the provided information does not indicate that ordinary collection creation without those parameters triggers the issue.
What is the immediate impact of successful exploitation?
A successful exploit can cause an out-of-bounds memory write in the MongoDB Server process and crash the server, resulting in denial of service. The description also identifies potential further impact, including arbitrary code execution.