CVE-2026-19503: MongoDB Schema Manager and MongoDB Atlas SQL ODBC Driver do not validate the scheme of the authorization and t

Routine

MEDIUM 4.8REMOTEUPGRADEUPGRADE

CVE-2026-19503 is a medium-severity flaw (CVSS 4.8) affecting odbc driver, sql schema builder cli. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MongoDB Schema Manager and MongoDB Atlas SQL ODBC Driver do not validate the scheme of the authorization and token endpoints returned by an OIDC issuer's discovery document. A user induced to connect to an uncontrolled MongoDB deployment using MONGODB-OIDC authentication may have an uncontrolled URI dispatched to their operating system's default protocol handler, potentially exposing credentials or, under certain conditions, resulting in code exe

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 90%)
CISA exploited list	No
Weakness	CWE-20
Published	2026-08-12
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

2026-08-12 21:17 UTCPublished CVE record published
2026-09-29 21:02 UTCUpdated Record last modified

mongodb odbc driver UPGRADE

Affected: >= 1.0.0 and < 2.0.9

Fixed in: 2.0.9

Safe to downgrade to: a release before 1.0.0

1. Check installed version

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

2. UPGRADE to 2.0.9 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade odbc-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 1.0.0 (Debian / Ubuntu)

apt-cache madison odbc-driver sudo apt install odbc-driver=<VERSION_BEFORE_1.0.0> sudo apt-mark hold odbc-driver

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

dnf --showduplicates list odbc-driver sudo dnf downgrade odbc-driver-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add odbc-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.

mongodb sql schema builder cli UPGRADE

Affected: >= 1.0.1 and < 1.2.1

Fixed in: 1.2.1

Safe to downgrade to: a release before 1.0.1

1. Check installed version

apt-cache policy sql-schema-builder-cli || rpm -q sql-schema-builder-cli || sql-schema-builder-cli --version

2. UPGRADE to 1.2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sql-schema-builder-cli

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sql-schema-builder-cli

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 1.0.1 (Debian / Ubuntu)

apt-cache madison sql-schema-builder-cli sudo apt install sql-schema-builder-cli=<VERSION_BEFORE_1.0.1> sudo apt-mark hold sql-schema-builder-cli

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

dnf --showduplicates list sql-schema-builder-cli sudo dnf downgrade sql-schema-builder-cli-<VERSION_BEFORE_1.0.1> sudo dnf versionlock add sql-schema-builder-cli

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-2026-19503?

odbc driver: upgrade to 2.0.9; sql schema builder cli: upgrade to 1.2.1. Exact commands for each OS are on this page.

Is CVE-2026-19503 being exploited?

CVE-2026-19503 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-2026-19503 affect?

CVE-2026-19503 affects odbc driver, sql schema builder cli. Severity is medium (CVSS 4.8). MongoDB Schema Manager and MongoDB Atlas SQL ODBC Driver do not validate the scheme of the authorization and token endpoints returned by an OIDC issuer's discovery document. A user induced to connect to an uncontrolled MongoDB deployment us

How urgent is CVE-2026-19503?

Priority 24/100. Remotely exploitable, no login, no user action

Software pages

MongoDB vulnerabilities

References

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