CVE-2026-19003 Memory corruption in BI Connector ODBC Driver

High 8.4 Published 12 Aug 2026 Updated 13 Aug 2026

Attacker can trigger buffer overflow via oversized path settings in ODBC driver setup dialog, potentially leading to code execution or crash.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-19003?

CVE-2026-19003 is a high-severity memory corruption vulnerability in MongoDB BI Connector ODBC Driver, published on 12 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A data source definition containing an over-length file path setting may cause the MongoDB BI Connector ODBC Driver setup dialog to write outside the bounds of an allocated buffer. The issue stems from an incorrect buffer capacity calculation in the dialog's file and folder selection handling, and is reached only when a user opens the setup dialog for such a data source and initiates a file or folder selection. Depending on build configuration, the result may range from abnormal process termination to, under certain conditions, execution of unintended code in the context of the user running the dialog.

Weakness: CWE-121

Which versions are affected by CVE-2026-19003?

It affects 1 product.

Products include Mongodb Bi Connector Odbc Driver.

How do I fix CVE-2026-19003?

No fix has been published for CVE-2026-19003 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-19003 being exploited?

There is no known exploitation of CVE-2026-19003 in the wild and no public exploit code.

Sources

Also known as GHSA-5vfq-q6f3-hh9v.