CVE-2026-81533 MEDIUM

CVE-2026-81533: MongoDB BI Connector ODBC Driver Memory-Safety Issue When Parsing Oversized LIMIT Values

Vendor Mongodb
Product BI Connector ODBC Driver
Weakness CWE-121
Published August 28, 2026
Last update August 28, 2026

CVSS base score

6.0/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

An application using the MongoDB BI Connector ODBC Driver may encounter a memory-safety issue when a submitted SQL statement contains an unusually long run of digits following a LIMIT clause. The issue occurs only on connections where the driver's optional prefetch setting is enabled, and stems from the driver copying the digit sequence into a fixed-size internal buffer without checking its length. A user able to influence the numeric portion of a LIMIT clause could cause the hosting application process to terminate unexpectedly or corrupt adjacent memory in that process.

Key dates

02Disclosure timeline

August 28, 2026 CVE published