CVE-2026-88029: Improper neutralization of special elements in data query logic in the GridFS component of the MongoDB Python

Routine

HIGH 8.3UPGRADE

CVE-2026-88029 is a high-severity flaw (CVSS 8.3) affecting python driver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper neutralization of special elements in data query logic in the GridFS component of the MongoDB Python 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

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-943
Published	2026-09-10
Last modified	2026-09-29

Publisher (CNA): MongoDB, Inc. · Vendor: mongodb

Last updated 2026-09-29 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-10 18:18 UTCPublished CVE record published
2026-09-29 16:06 UTCUpdated Record last modified

mongodb python driver UPGRADE

Affected: >= 1.6 and < 4.18.1

Fixed in: 4.18.1

Safe to downgrade to: a release before 1.6

1. Check installed version

apt-cache policy python-driver || rpm -q python-driver || python-driver --version

2. UPGRADE to 4.18.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade python-driver

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade python-driver

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.6 (Debian / Ubuntu)

apt-cache madison python-driver sudo apt install python-driver=<VERSION_BEFORE_1.6> sudo apt-mark hold python-driver

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list python-driver sudo dnf downgrade python-driver-<VERSION_BEFORE_1.6> sudo dnf versionlock add python-driver

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-88029?

python driver: upgrade to 4.18.1. Exact commands for each OS are on this page.

Is CVE-2026-88029 being exploited?

CVE-2026-88029 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-88029 affect?

CVE-2026-88029 affects python driver. Severity is high (CVSS 8.3). Improper neutralization of special elements in data query logic in the GridFS component of the MongoDB Python Driver can cause a caller-supplied structured file identifier to be interpreted as a query condition rather than as a literal iden

How urgent is CVE-2026-88029?

Priority 34/100. High severity

Software pages

Python vulnerabilities · MongoDB vulnerabilities

Related CVEs

CVE-2026-106435 MEDIUM 5.1 UPGRADE The MongoDB Python Driver's binary accelerator can read outside a buffer when an application decodes malformed

References

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