CVE-2026-120959: A memory-handling flaw in the MongoDB Atlas SQL ODBC Driver can cause values returned for a query to be writte

Routine

LOW 3.7UPGRADE

CVE-2026-120959 is a low-severity flaw (CVSS 3.7) affecting atlas sql. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A memory-handling flaw in the MongoDB Atlas SQL ODBC Driver can cause values returned for a query to be written outside the bounds of a buffer provided by the calling application. A party able to influence the values a query returns may cause data to be placed at an unintended location in the client application's memory, which may result in unintended modification of that memory or termination of the client process. Reaching this condition depend

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	3.7 (Low)
EPSS exploit chance	n/a
CISA exploited list	No
Weakness	CWE-787
Published	2026-11-03
Last modified	2026-11-03

Publisher (CNA): mongodb · Vendor: mongodb · Source: CVE Program record (NVD analysis pending)

Last updated 2026-11-03 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-11-03 20:18 UTCPublished CVE record published
2026-11-03 20:18 UTCUpdated Record last modified

mongodb atlas sql UPGRADE

Affected: >= 1.3.0 and < 3.0.1

Fixed in: 3.0.1

Safe to downgrade to: a release before 1.3.0

1. Check installed version

apt-cache policy atlas-sql || rpm -q atlas-sql || atlas-sql --version

2. UPGRADE to 3.0.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade atlas-sql

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade atlas-sql

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 1.3.0 (Debian / Ubuntu)

apt-cache madison atlas-sql sudo apt install atlas-sql=<VERSION_BEFORE_1.3.0> sudo apt-mark hold atlas-sql

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

dnf --showduplicates list atlas-sql sudo dnf downgrade atlas-sql-<VERSION_BEFORE_1.3.0> sudo dnf versionlock add atlas-sql

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.

Advisories and coverage

Research and news

VulDB Recent Entries: CVE-2026-120959 | MongoDB Atlas SQL up to 3.0.0 memory corruption 2026-11-03

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-2026-120959?

atlas sql: upgrade to 3.0.1. Exact commands for each OS are on this page.

Is CVE-2026-120959 being exploited?

CVE-2026-120959 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-2026-120959 affect?

CVE-2026-120959 affects atlas sql. Severity is low (CVSS 3.7). A memory-handling flaw in the MongoDB Atlas SQL ODBC Driver can cause values returned for a query to be written outside the bounds of a buffer provided by the calling application. A party able to influence the values a query returns may cau

How urgent is CVE-2026-120959?

Priority 13/100. No elevated risk signals yet.

Software pages

MongoDB vulnerabilities

References

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