CVE-2026-47023: Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Replication)

Routine

MEDIUM 4.9WATCHLISTUPGRADEUPGRADE

CVE-2026-47023 is a medium-severity flaw (CVSS 4.9) affecting mysql server, mysql cluster. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Replication). Supported versions that are affected are MySQL Server: 8.4.0-8.4.10, 9.7.0-9.7.1; MySQL Cluster: 8.0.0-8.0.47, 8.4.0-8.4.10 and 9.7.0-9.7.1. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can res

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	4.9 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-400
Published	2026-07-21
Last modified	2026-10-24

Publisher (CNA): Oracle · Vendor: oracle

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-21 22:17 UTCPublished CVE record published
2026-10-24 19:10 UTCUpdated Record last modified

oracle mysql server UPGRADE

Affected: >= 8.4.0 and <= 8.4.10 · 9.7.0 · 9.7.1

Fixed in: newer than 8.4.10

Safe to downgrade to: a release before 8.4.0

1. Check installed version

apt-cache policy mysql-server || rpm -q mysql-server || mysql-server --version

2. UPGRADE to newer than 8.4.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mysql-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mysql-server

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 8.4.0 (Debian / Ubuntu)

apt-cache madison mysql-server sudo apt install mysql-server=<VERSION_BEFORE_8.4.0> sudo apt-mark hold mysql-server

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

dnf --showduplicates list mysql-server sudo dnf downgrade mysql-server-<VERSION_BEFORE_8.4.0> sudo dnf versionlock add mysql-server

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.

oracle mysql cluster UPGRADE

Affected: >= 8.0.0 and <= 8.0.47 · >= 8.4.0 and <= 8.4.10 · 9.7.0 · 9.7.1

Fixed in: newer than 8.4.10

Safe to downgrade to: a release before 8.0.0

1. Check installed version

apt-cache policy mysql-cluster || rpm -q mysql-cluster || mysql-cluster --version

2. UPGRADE to newer than 8.4.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mysql-cluster

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mysql-cluster

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 8.0.0 (Debian / Ubuntu)

apt-cache madison mysql-cluster sudo apt install mysql-cluster=<VERSION_BEFORE_8.0.0> sudo apt-mark hold mysql-cluster

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

dnf --showduplicates list mysql-cluster sudo dnf downgrade mysql-cluster-<VERSION_BEFORE_8.0.0> sudo dnf versionlock add mysql-cluster

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

Official advisories

Amazon Linux 2023 ALAS: ALAS2023-2026-3198 (medium): mariadb1011 2026-10-12
Amazon Linux 2023 ALAS: ALAS2023-2026-3199 (medium): mariadb114 2026-10-12
Amazon Linux 2023 ALAS: ALAS2023-2026-3200 (medium): mariadb118 2026-10-12
Amazon Linux 2023 ALAS: ALAS2023-2026-3201 (medium): mariadb123 2026-10-12

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-2026-47023?

mysql server: upgrade to newer than 8.4.10; mysql cluster: upgrade to newer than 8.4.10. Exact commands for each OS are on this page.

Is CVE-2026-47023 being exploited?

CVE-2026-47023 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-2026-47023 affect?

CVE-2026-47023 affects mysql server, mysql cluster. Severity is medium (CVSS 4.9). Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Replication). Supported versions that are affected are MySQL Server: 8.4.0-8.4.10, 9.7.0-9.7.1; MySQL Cluster: 8.0.0-8.0.47, 8.4.0-8.4.10 and 9.7

How urgent is CVE-2026-47023?

Priority 28/100. On your watchlist

Software pages

MySQL vulnerabilities

Related CVEs

CVE-2026-60190 LOW 2.2 UPGRADE UPGRADE Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Replication)

References

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