CVE-2026-34303

EUVD-2026-24395

21.04.2026, 21:16

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 and  9.0.0-9.6.0. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 6.5 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
oracle	CNA	6.5 MEDIUM	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 22%

Affected Products (NVD)

Vendor	Product	Version
oracle	mysql_server	8.0.0 ≤ 𝑥 ≤ 8.0.45
oracle	mysql_server	8.4.0 ≤ 𝑥 ≤ 8.4.8
oracle	mysql_server	9.0.0 ≤ 𝑥 ≤ 9.6.0

𝑥

= Vulnerable software versions

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
oracle	mysql	8.0.0 ≤ 𝑥 ≤ 8.0.45	CNA
oracle	mysql	8.4.0 ≤ 𝑥 ≤ 8.4.8	CNA
oracle	mysql	9.0.0 ≤ 𝑥 ≤ 9.6.0	CNA

Debian Releases

Debian Product

Codename

mariadb

bookworm	1:10.11.18-0+deb12u1 fixed
forky	1:11.8.8-1 fixed
sid	1:11.8.8-1 fixed
trixie	1:11.8.6-0+deb13u1 fixed

mysql-8.0

sid	8.0.46-1 fixed

openSUSE / SLES Releases

openSUSE Product

Release

libmariadbd-devel

suse enterprise sap 15 SP7	11.8.8-150700.3.15.1 fixed
suse enterprise server 15 SP6	10.11.18-150600.4.20.1 fixed
suse enterprise server 15 SP7	11.8.8-150700.3.15.1 fixed

libmariadbd19

suse enterprise sap 15 SP7	11.8.8-150700.3.15.1 fixed
suse enterprise server 15 SP6	10.11.18-150600.4.20.1 fixed
suse enterprise server 15 SP7	11.8.8-150700.3.15.1 fixed

mariadb

suse enterprise sap 15 SP7	11.8.8-150700.3.15.1 fixed
suse enterprise server 15 SP6	10.11.18-150600.4.20.1 fixed
suse enterprise server 15 SP7	11.8.8-150700.3.15.1 fixed

mariadb-client

suse enterprise sap 15 SP7	11.8.8-150700.3.15.1 fixed
suse enterprise server 15 SP6	10.11.18-150600.4.20.1 fixed
suse enterprise server 15 SP7	11.8.8-150700.3.15.1 fixed

mariadb-errormessages

suse enterprise sap 15 SP7	11.8.8-150700.3.15.1 fixed
suse enterprise server 15 SP6	10.11.18-150600.4.20.1 fixed
suse enterprise server 15 SP7	11.8.8-150700.3.15.1 fixed

mariadb-tools

suse enterprise sap 15 SP7	11.8.8-150700.3.15.1 fixed
suse enterprise server 15 SP6	10.11.18-150600.4.20.1 fixed
suse enterprise server 15 SP7	11.8.8-150700.3.15.1 fixed

Red Hat Enterprise Linux Releases

Red Hat Product

Release

mysql

RHEL 9

0:8.0.46-1.el9_8

fixed

mysql-common

RHEL 9

0:8.0.46-1.el9_8

fixed

mysql-devel

RHEL 9

0:8.0.46-1.el9_8

fixed

mysql-errmsg

RHEL 9

0:8.0.46-1.el9_8

fixed

mysql-libs

RHEL 9

0:8.0.46-1.el9_8

fixed

mysql-server

RHEL 9

0:8.0.46-1.el9_8

fixed

mysql-test

RHEL 9

0:8.0.46-1.el9_8

fixed

Amazon Linux Releases

Amazon Package

Release

mariadb1011

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-backup

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-backup-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-client-utils

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-common

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-connect-engine

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-connect-engine-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-cracklib-password-check

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-cracklib-password-check-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-debugsource

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-devel

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-errmsg

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-gssapi-server

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-gssapi-server-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-oqgraph-engine

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-oqgraph-engine-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-pam

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-pam-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-rocksdb-engine

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-rocksdb-engine-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-server

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-server-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-server-utils

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-server-utils-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-sphinx-engine

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-sphinx-engine-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-test

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb1011-test-debuginfo

Amazon Linux 2023

3:10.11.18-1.amzn2023.0.1

fixed

mariadb114

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-backup

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-backup-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-client-utils

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-common

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-connect-engine

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-connect-engine-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-cracklib-password-check

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-cracklib-password-check-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-debugsource

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-devel

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-errmsg

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-gssapi-server

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-gssapi-server-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-oqgraph-engine

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-oqgraph-engine-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-pam

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-pam-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-rocksdb-engine

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-rocksdb-engine-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-server

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-server-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-server-utils

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-server-utils-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-sphinx-engine

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-sphinx-engine-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-test

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

mariadb114-test-debuginfo

Amazon Linux 2023

3:11.4.10-1.amzn2023.0.1

fixed

Azure Linux Releases

Azure Package

Release

mysql

Azure Linux 3.0

0:8.0.46-1.azl3

fixed

Common Weakness Enumeration

CWE-400 - Uncontrolled Resource Consumption
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

References

https://www.oracle.com/security-alerts/cpuapr2026.html