CVE-2026-25612
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Lock Collision Deadlock in MongoDB Server Causes Service Unavailability

Publication date: 2026-02-10

Last updated on: 2026-02-10

Assigner: MongoDB, Inc.

Description
The internal locking mechanism of the MongoDB server uses an internal encoding of the resources in order to choose what lock to take. Collections may inadvertently collide with one another in this representation causing unavailability between them due to conflicting locks.

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Meta Information

Published
2026-02-10
Last Modified
2026-02-10
Generated
2026-07-06
AI Q&A
2026-02-10
EPSS Evaluated
2026-07-05
NVD
CVE-2026-25612
EUVD
EUVD-2026-6765

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mongodb mongodb *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-412 The product properly checks for the existence of a lock, but the lock can be externally controlled or influenced by an actor that is outside of the intended sphere of control.

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Executive Summary

This vulnerability involves the internal locking mechanism of the MongoDB server. The server uses an internal encoding of resources to determine which lock to acquire. However, collections may unintentionally collide in this encoding, causing conflicting locks between them.

As a result, these collisions can lead to unavailability issues because the conflicting locks prevent normal access to the collections.

Impact Analysis

The primary impact of this vulnerability is unavailability of MongoDB collections. Due to conflicting locks caused by the internal encoding collision, collections may become inaccessible or experience downtime.

This can disrupt applications relying on MongoDB for data storage and retrieval, potentially causing service interruptions.

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