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Vulnerability record · CVE-2026-18888 · published 12 August 2026

CVE-2026-18888: Mongodb bi connector odbc driver out-of-bounds write vulnerability

Mongodb · Bi Connector Odbc Driver

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.

7.1 CVSS 4.0 High EPSS 0.32% · top 78.0% CWE-787 · Out-of-bounds write
7.1CVSS 4.0 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
11 Sep 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/mongodb/mongo-bi-connector-odbc-driver/releases/tag/v1.4.9 Vendor AdvisoryRelease Notes

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.5CVE-2026-19001Mongodb bi connector odbc driver integer overflow vulnerabilityThe MongoDB BI Connector ODBC Driver may write outside the bounds of a fixed-size buffer when an application supplies an unusually long catalog, sche…EPSS 0.54%8.8CVE-2026-19002Mongodb bi connector odbc driver classic buffer overflow vulnerabilityA missing bounds check when parsing stored procedure parameter metadata in the MongoDB BI Connector ODBC Driver can result in an out-of-bounds write …EPSS 0.40%8.8CVE-2026-19004Mongodb bi connector odbc driver heap-based buffer overflow vulnerabilityAn application using the MongoDB BI Connector ODBC Driver may experience a memory-safety issue when processing output parameters from a stored proced…EPSS 0.50%8.7CVE-2026-81532Mongodb bi connector odbc driver stack-based buffer overflow vulnerabilityA user able to submit SQL through an application using the MongoDB Connector for BI ODBC driver can supply a positioned-cursor statement whose cursor…EPSS 0.49%8.4CVE-2026-19003Mongodb bi connector odbc driver stack-based buffer overflow vulnerabilityA data source definition containing an over-length file path setting may cause the MongoDB BI Connector ODBC Driver setup dialog to write outside the…EPSS 0.21%6.0CVE-2026-81533Mongodb bi connector odbc driver stack-based buffer overflow vulnerabilityAn application using the MongoDB BI Connector ODBC Driver may encounter a memory-safety issue when a submitted SQL statement contains an unusually lo…EPSS 0.37%8.8CVE-2026-53266Linux kernel ebtables SNAT out-of-bounds write in ARP rewriteThe ebtables SNAT target rewrites the ARP sender hardware address via skb_store_bits() without first making that range writable. When the ARP SHA byt…KEVEPSS 0.65%analysed8.8CVE-2026-87491Google Chrome V8 out-of-bounds write enables sandbox code executionChrome before 153.0.8010.36 contains an out-of-bounds write in the V8 JavaScript engine. A crafted HTML page can trigger the memory corruption, and b…KEVEPSS 3.1%analysed

Source: NIST National Vulnerability Database (record CVE-2026-18888), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.