Mongodb: >> C Driver >> 2.1.0 Security Vulnerabilities
The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a division-by-zero) or silently leak process memory contents (via an out-of-bounds read).
CVSS Score
6.0
EPSS Score
0.003
Published
2026-05-20
The MongoDB C Driver's Cyrus SASL integration performs unsafe string copying during username canonicalization, enabling a heap buffer overflow before any authentication or network traffic. This may be triggered by passing untrusted input in the username of a MongoDB URI with authMechanism=GSSAPI.
CVSS Score
8.6
EPSS Score
0.001
Published
2026-05-06
A mongoc_bulk_operation_t may read invalid memory if large options are passed.
CVSS Score
6.9
EPSS Score
0.002
Published
2025-11-18
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