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Vulnerabilities CVE-2026-18888

CVE-2026-18888

High
Open
TLP:CLEAR

MongoDB BI Connector ODBC driver may write outside an allocated buffer when retrieving large floating point values as character data

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Description

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.

Details

CVSS Score
7.1
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
Aug 12, 2026
Last Modified
Aug 12, 2026
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