CVE-2026-88033 GridFS data disclosure and deletion via query-operator injection in file IDs in the MongoDB Java Driver

Medium 6.1 Published 10 Sep 2026 Updated 10 Sep 2026

An authenticated user can inject query operators into GridFS file IDs to read unauthorized file content or delete all chunks in a bucket.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-88033?

CVE-2026-88033 is a medium-severity code injection vulnerability in MongoDB Java Driver, published on 10 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper neutralization of special elements in data query logic in the GridFS component of the MongoDB Java 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. The affected rename operation may also rename a stored file other than the intended target.

Weakness: CWE-943

Which versions are affected by CVE-2026-88033?

It affects 1 product.

Products include Mongodb Java Driver.

How do I fix CVE-2026-88033?

No fix has been published for CVE-2026-88033 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-88033 being exploited?

There is no known exploitation of CVE-2026-88033 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2026-88033, UBUNTU-CVE-2026-88033.