A memory-handling weakness in the BSON deserialization component of the MongoDB C# Driver may cause data left over from previously processed content to be returned when specially crafted serialized input is parsed. An unauthenticated party able to supply serialized data to an application that maps certain primitive collection types can cause residual bytes from unrelated data processed earlier on the same execution thread to be surfaced as legitimate values. This can result in disclosure of a limited amount of information belonging to other requests or principals of the consuming application. No authentication or special privileges within the application are required.
Metrics
Affected Vendors & Products
References
History
Fri, 23 Oct 2026 03:45:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Mongodb
Mongodb c# Driver |
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| Vendors & Products |
Mongodb
Mongodb c# Driver |
Fri, 23 Oct 2026 00:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A memory-handling weakness in the BSON deserialization component of the MongoDB C# Driver may cause data left over from previously processed content to be returned when specially crafted serialized input is parsed. An unauthenticated party able to supply serialized data to an application that maps certain primitive collection types can cause residual bytes from unrelated data processed earlier on the same execution thread to be surfaced as legitimate values. This can result in disclosure of a limited amount of information belonging to other requests or principals of the consuming application. No authentication or special privileges within the application are required. | |
| Title | Cross-document data leak via malformed BSON array parsing in reused thread buffer | |
| Weaknesses | CWE-908 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: mongodb
Published: 2026-10-22T19:13:56.276Z
Updated: 2026-10-30T19:25:16.427Z
Reserved: 2026-10-21T21:57:51.270Z
Link: CVE-2026-114651
No data.
Status : Awaiting Analysis
Published: 2026-10-22T19:17:39.003
Modified: 2026-10-30T20:17:00.907
Link: CVE-2026-114651
No data.