VULNERABILITY INTELLIGENCE

CVE-2026-81527

CVSS score6.5 MEDIUM
EPSS probability0.31%
CISA KEVNot currently listed
Published2026-08-27
Last modified2026-09-29
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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.

Weakness classification

  • cna@mongodb.com: CWE-943

Primary references