MongoDB BI Connector ODBC driver may write outside an allocated buffer when handling oversized catalog object names (CVE-2026-19001) | HOL Guard CVE

Critical · CVSS 9.8CVE-2026-19001

MongoDB BI Connector ODBC driver may write outside an allocated buffer when handling oversized catalog object names

Answer in brief

CVE-2026-19001 records a Critical severity (CVSS 9.8) vulnerability in MongoDB BI Connector ODBC driver may write outside an allocated buffer when handling oversized catalog object names. The current sources do not mark it as known exploited. The current feed maps MongoDB/BI Connector ODBC Driver (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 12, 2026Updated Sep 11, 2026Source checked Sep 29, 2026First seen by HOL Aug 12, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps MongoDB/BI Connector ODBC Driver (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:mongodb:bi_connector_odbc_driver::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
MongoDB/BI Connector ODBC Drivergeneric	>=1.0.0 <1.4.9	1.4.9

Recommended response

Check inventory. Check lockfiles and deployed manifests for MongoDB/BI Connector ODBC Driver.
Review the reported fix. Update MongoDB/BI Connector ODBC Driver to 1.4.9 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 12, 2026

Sources and claim methodology

GitHub security advisorygithub.com

Upstream source description

The MongoDB BI Connector ODBC Driver may write outside the bounds of a fixed-size buffer when an application supplies an unusually long catalog, schema, or object name to a metadata retrieval function. This may result in memory corruption within the calling application's process, leading to abnormal termination and, under certain conditions, the potential for arbitrary code execution.

Quoted source text, attributed separately from HOL analysis.