CVE-2026-18888CWE-787

CVE-2026-18888

Medium · published August 13, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
23.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00316 · 23.2th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-08-13T01:17Z
Affected products (1)
ProductVersionsFixed in
mongodb/bi_connector_odbc_driver≥ 1.0.0, < 1.4.91.4.9
References (1)
https://github.com/mongodb/mongo-bi-connector-odbc-driver/releases/tag/v1.4.9 · [email protected]
EPSS history
Timeline
  • 12 AUG 20:29Z
    MongoDB BI Connector ODBC driver may write outside an allocated buffer when retrieving large floating point values as character data
    cvelistv5