SEPTEMBER 17, 2026
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Case File

CVE-2026-81527

MEDIUM · CVSS 6.5 EPSS 0.18%

Source: NVD + CISA KEV + EPSS · Published 2026-08-27 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The MongoDB C# Driver is vulnerable to a NoSQL/expression injection flaw in its LINQ-to-aggregation query translation layer, allowing attackers to manipulate application-supplied values in queries. This can lead to unintended data exposure or altered query results, posing a risk to data integrity and confidentiality. Organizations using the affected MongoDB C# Driver should prioritize addressing this vulnerability to safeguard their applications against potential exploitation.

CVE
CVE-2026-81527
Severity
MEDIUM
CVSS
6.5
EPSS
0.18%
MongoDB

Original NVD Description

A NoSQL/expression injection weakness exists in the LINQ-to-aggregation query translation layer of the MongoDB C# Driver, in both aggregation expression and query filter translation. When application-supplied values are embedded in certain query constructs, special elements contained within those values are not properly escaped before the resulting query is transmitted to the database, so portions of the value may be interpreted by the database as query logic rather than as data. A user able to supply values that an application incorporates into an affected query may thereby cause unintended data to be returned or query results to be altered.