CVE-2026-18888 — MEDIUM (6.5)

Q: How severe is CVE-2026-18888?

CVE-2026-18888 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-18888?

Check the references section above for vendor advisories and patch information. Affected products include: Mongodb Bi Connector Odbc Driver.

Vulnerability 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 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Mongodb	Bi Connector Odbc Driver	>= 1.0.0, < 1.4.9

Related Weaknesses (CWE)

CWE-787

References

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

FAQ

What is CVE-2026-18888?

CVE-2026-18888 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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...

How severe is CVE-2026-18888?

CVE-2026-18888 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-18888?

Check the references section above for vendor advisories and patch information. Affected products include: Mongodb Bi Connector Odbc Driver.