Vulnerability in MongoDB C++ Driver

CVE-2026-88034

Improper neutralization of special elements in data query logic in the GridFS component of the MongoDB C++ Driver can cause a caller-supplied structured file identifier to be interpreted as a query condition rather than as a literal identifier. An authenticated user who can influence the identifier passed by an affected application may obtain stored file content beyond the intended target or cause all GridFS file chunks in the affected bucket to be removed, rendering stored file content unreadable.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-88034?
CVE-2026-88034 is a high-severity vulnerability in MongoDB C++ Driver, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 8.3/10. Published 2026-09-10.
How severe is CVE-2026-88034?
High severity. CVSS v3 base score is 8.3 out of 10.