MongoDB 8.1 Duplicate _id Queries Causing Crash (DOS)
CVE-2025-7259 Published on July 7, 2025
Certain Queries with Duplicate _id Fields May Cause MongoDB Server to Crash
An authorized user can issue queries with duplicate _id fields, that leads to unexpected behavior in MongoDB Server, which may result to crash. This issue can only be triggered by authorized users and cause Denial of Service. This issue affects MongoDB Server v8.1 version 8.1.0.
Vulnerability Analysis
CVE-2025-7259 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is an Object Type Confusion Vulnerability?
The program allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.
CVE-2025-7259 has been classified to as an Object Type Confusion vulnerability or weakness.
Products Associated with CVE-2025-7259
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Affected Versions
MongoDB Inc MongoDB Server:- Version 8.1, <= 8.1.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.