CVE-2026-18888
MongoDB BI Connector ODBC driver may write outside an allocated buffer when retrieving large floating point values as character data
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
The MongoDB BI Connector ODBC Driver converts floating point column values into text without checking that the result fits within the destination buffer. When an application reads a sufficiently large floating point value as text, the driver may write beyond the end of that buffer and corrupt adjacent memory. A user who can store data in a collection read through the BI Connector could use this to crash the application performing the read.
| CWE | CWE-787 |
| Vendor | mongodb |
| Product | bi connector odbc driver |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
MongoDB / BI Connector ODBC Driver
1.0.0 < 1.4.9