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CVE-2026-88034

8.3 HIGHEPSS 0.26%
  1. Published10 Sept 2026

Description

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityLow
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

Affected products

Mongodb C\+\+ Driver≥ 3.2.0 < 4.5.2

Remediation

Fixed in
Mongodb C\+\+ Driver≥ 4.5.2

References

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Frequently asked

Is CVE-2026-88034 being actively exploited?

CVE-2026-88034 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.26%.

How severe is CVE-2026-88034?

CVE-2026-88034 has a CVSS 3.1 base score of 8.3, rated high. EPSS estimates a 0.26% probability of exploitation.

Which products are affected by CVE-2026-88034?

Affected products include Mongodb C\+\+ Driver.

How do I fix CVE-2026-88034?

Upgrade affected software to a fixed version, for example Mongodb C\+\+ Driver 4.5.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-88034 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.