CVE-2026-106437: Integer Underflow (Wrap or Wraparound)

The BSON buffer-reservation API in the MongoDB C Driver can record a length smaller than the five-byte BSON minimum. Later append or comparison operations can underflow unsigned length calculations and read or write outside the document buffer. An actor who can influence the length supplied by an...

CVE-2026-107325: Improper Validation of Array Index

Improper validation of a BSON array length in the MongoDB Go Driver can cause an out-of-bounds index and runtime panic when an application calls bson.RawArray.Validate or bsoncore.Array.Validate on a malformed four-byte array. An unauthenticated actor who can supply raw BSON array data to an...

PT-2026-108167

Name of the Vulnerable Software and Affected Versions MongoDB PHP Driver affected versions not specified Description The BSON encoder converts a string length to a 32-bit value without proper validation. If an application encodes a string close to 4 GiB, the allocation size may wrap around while...

PT-2026-108168

Name of the Vulnerable Software and Affected Versions MongoDB PHP Driver affected versions not specified Description The BSON encoder fails to verify certain return values when a document exceeds the size limit of libbson, which can leave the encoder in an invalid state. An unauthenticated actor...

PT-2026-108137

Name of the Vulnerable Software and Affected Versions MongoDB C Driver affected versions not specified Description An off-by-one error exists in the BSON bulk document writer. This occurs when a document ends at a specific buffer boundary, causing the writer to write one zero byte immediately pas...

PT-2026-108136

Name of the Vulnerable Software and Affected Versions MongoDB C++ Driver affected versions not specified Description The MongoDB C++ Driver discards content following an embedded NUL byte in specific field and collection names processed by the collection API. This behavior allows the driver and t...

PT-2026-108143

Name of the Vulnerable Software and Affected Versions MongoDB Go Driver affected versions not specified Description An integer overflow occurs during BSON value-length handling, which can trigger a runtime panic when an application validates or accesses a malformed BSON document. An unauthenticat...

CVE-2026-106433: Access of Resource Using Incompatible Type

Improper state management in MongoDB libmongocrypt can cause provider-specific data to be treated as an incompatible type when cleaning up a key document containing duplicate masterKey fields. An authenticated actor who can modify key vault documents, or a server that returns such a key document,...

CVE-2026-106428: Out-of-bounds Read

An out-of-bounds read in SCRAM authentication response parsing in the MongoDB C Driver can read one byte beyond a fixed-size buffer when processing a malformed server-final message. A server or network intermediary able to provide this message before server-signature verification can cause the...

CVE-2026-107324: Integer Overflow or Wraparound

An integer overflow in BSON value-length handling in the MongoDB Go Driver can cause a runtime panic when an application validates or accesses a malformed BSON document. An unauthenticated actor who can supply BSON bytes to an affected application may terminate an unprotected application process,...

PT-2026-108138

Name of the Vulnerable Software and Affected Versions libmongocrypt affected versions not specified Description Improper state management occurs when cleaning up a key document that contains duplicate masterKey fields, causing provider-specific data to be treated as an incompatible type. An...

PT-2026-108135

Name of the Vulnerable Software and Affected Versions MongoDB libmongocrypt affected versions not specified Description An integer underflow exists in the KMS endpoint-parsing logic. This occurs when an authenticated user modifies a key document in the key vault collection, or when an application...

PT-2026-108134

Name of the Vulnerable Software and Affected Versions MongoDB C Driver affected versions not specified Description An out-of-bounds read occurs during SCRAM authentication response parsing when the driver processes a malformed server-final message. This allows the system to read one byte beyond a...

PT-2026-108141

Name of the Vulnerable Software and Affected Versions MongoDB C Driver affected versions not specified Description An incorrect calculation in Decimal128 string parsing allows the driver to accept certain over-precision inputs containing leading zeros instead of rejecting them. This results in th...

PT-2026-108144

Name of the Vulnerable Software and Affected Versions MongoDB Go Driver affected versions not specified Description Improper validation of a BSON array length can lead to an out-of-bounds index and runtime panic. This occurs when an application invokes the bson.RawArray.Validate or...

PT-2026-108174

Name of the Vulnerable Software and Affected Versions IBM Guardium Data Protection versions 12.0 through 12.2 Description A heap-based buffer overflow exists in the MongoDB protocol parser. A remote attacker can trigger memory corruption by sending a specially crafted MongoDB SCRAM username with ...

PT-2026-108198

Name of the Vulnerable Software and Affected Versions MongoDB Python Driver affected versions not specified Description The binary accelerator in the driver can perform an out-of-bounds read when decoding malformed BSON that contains a truncated regular-expression element missing a trailing NUL...

CVE-2026-106435: Out-of-bounds Read

The MongoDB Python Driver's binary accelerator can read outside a buffer when an application decodes malformed BSON containing a truncated regular-expression element without a trailing NUL byte. An actor who can supply BSON to the documented decode or decodeall API can cause the application proce...

CVE-2026-106434: Improper Validation of Integrity Check Value

The explicit decryption component of MongoDB libmongocrypt can return an unrecognized encrypted payload unchanged instead of returning a decryption error. An actor who can modify stored encrypted fields, such as a database writer, server, or network intermediary, can cause an affected application...

CVE-2026-106432: Incorrect Conversion between Numeric Types

The BSON encoder in the MongoDB PHP Driver converts a string length to a 32-bit value without validation. When an affected application encodes a string near 4 GiB, the allocation size can wrap while the copy operation uses the original length. The resulting heap buffer overflow can corrupt proces...