CVE-2026-18888

MediumCVSS 6.5/10Last modified Oct 23, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Aug 12, 2026
Last modified
Oct 23, 2026
NVD status
Analyzed

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CVE-2026-18888: Medium severity, CVSS 6.5 | Vulnix