CVE-2026-84964

A double free in the OpenSSL-based TLS certificate revocation checking path of the MongoDB C Driver can be reached by a TLS endpoint that the client already trusts. During the handshake, specially formed certificate data can cause the same heap object to be released twice. An unauthenticated part...

CVE-2026-84964 Heap corruption via OCSP request double free from crafted multi-URL certificate in TLS client

A double free in the OpenSSL-based TLS certificate revocation checking path of the MongoDB C Driver can be reached by a TLS endpoint that the client already trusts. During the handshake, specially formed certificate data can cause the same heap object to be released twice. An unauthenticated part...

EUVD-2026-70514

A double free in the OpenSSL-based TLS certificate revocation checking path of the MongoDB C Driver can be reached by a TLS endpoint that the client already trusts. During the handshake, specially formed certificate data can cause the same heap object to be released twice. An unauthenticated part...

Heap corruption via OCSP request double free from crafted multi-URL certificate in TLS client

A double free in the OpenSSL-based TLS certificate revocation checking path of the MongoDB C Driver can be reached by a TLS endpoint that the client already trusts. During the handshake, specially formed certificate data can cause the same heap object to be released twice. An unauthenticated part...

CVE-2026-84966 BSON element injection via NUL-embedded document keys in builder append

An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application supplies an extremely large, non-terminated field name to the builder, the library may read memory outside the intende...

CVE-2026-84966

An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application passes an extremely large, non-terminated field name to the builder, the library may read memory outside the intended ...

CVE-2026-84966 BSON element injection via NUL-embedded document keys in builder append

An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application supplies an extremely large, non-terminated field name to the builder, the library may read memory outside the intende...

CVE-2026-84966 BSON element injection via NUL-embedded document keys in builder append

An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application supplies an extremely large, non-terminated field name to the builder, the library may read memory outside the intende...

CVE-2026-84966

An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application supplies an extremely large, non-terminated field name to the builder, the library may read memory outside the intende...

EUVD-2026-70511

An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application supplies an extremely large, non-terminated field name to the builder, the library may read memory outside the intende...

BSON element injection via NUL-embedded document keys in builder append

An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application supplies an extremely large, non-terminated field name to the builder, the library may read memory outside the intende...

EUVD-2026-70508

A memory-handling error in the BSON-to-JSON conversion helpers of the MongoDB C Driver can write a small number of bytes past the end of a heap buffer when a binary field is encoded and the output is cut short at a caller-configured length limit. A party who supplies the document content, with no...

CVE-2026-84969 Heap overflow via truncated base64 encoding of binary fields in length-limited JSON output

A memory-handling error in the BSON-to-JSON conversion helpers of the MongoDB C Driver can write a small number of bytes past the end of a heap buffer when a binary field is encoded and the output is cut short at a caller-configured length limit. A party who supplies the document content, with no...

CVE-2026-84969

CVE-2026-84969 is a heap buffer overflow in the BSON-to-JSON conversion helpers of the MongoDB C Driver . The root cause is a truncated Base64 encoding of a binary field when the output is cut short at a caller-configured length limit, causing a small number of bytes to be written past the end of...

CVE-2026-84969

A memory-handling error in the BSON-to-JSON conversion helpers of the MongoDB C Driver can write a small number of bytes past the end of a heap buffer when a binary field is encoded and the output is cut short at a caller-configured length limit. A party who supplies the document content, with no...

CVE-2026-84969 Heap overflow via truncated base64 encoding of binary fields in length-limited JSON output

A memory-handling error in the BSON-to-JSON conversion helpers of the MongoDB C Driver can write a small number of bytes past the end of a heap buffer when a binary field is encoded and the output is cut short at a caller-configured length limit. A party who supplies the document content, with no...

CVE-2026-84969 Heap overflow via truncated base64 encoding of binary fields in length-limited JSON output

A memory-handling error in the BSON-to-JSON conversion helpers of the MongoDB C Driver can write a small number of bytes past the end of a heap buffer when a binary field is encoded and the output is cut short at a caller-configured length limit. A party who supplies the document content, with no...

Heap overflow via truncated base64 encoding of binary fields in length-limited JSON output

A memory-handling error in the BSON-to-JSON conversion helpers of the MongoDB C Driver can write a small number of bytes past the end of a heap buffer when a binary field is encoded and the output is cut short at a caller-configured length limit. A party who supplies the document content, with no...

CVE-2026-84970 Heap over-read or silent misparse via 32-bit truncation of JSON length in BSON JSON parser

A numeric truncation weakness exists in the JSON parsing component of the MongoDB C++ Driver's BSON library. An actor who controls the text that an embedding application hands to the library's public JSON parsing interface, when that text is very large, can cause the library to read memory beyond...

CVE-2026-84970

A numeric truncation (32-bit length truncation) in the JSON parsing component of the MongoDB C++ Driver's BSON library allows a local attacker to supply an oversized JSON string to the library's public parsing interface, causing a heap over-read (out-of-bounds memory returned to the caller), a si...