CVE-2026-18888 — MongoDB BI Connector ODBC driver may write outside an allocated buffer when retrieving large floating point values as character data
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 rea…
Published: 2026-08-12 · CVSS: 7.1 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7