Description
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).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Oracle | MySQL Server | 8.0.0 – ≤ 8.0.45, 8.4.0 – ≤ 8.4.8, 9.0.0 – ≤ 9.6.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | mysql-8.4 | 8.4.9-0ubuntu0.26.04.1 | USN-8363-1 |
| Ubuntu 25.10 | mysql-8.4 | 8.4.9-0ubuntu0.25.10.1 | USN-8363-1 |
| Ubuntu 24.04 LTS | mysql-8.0 | 8.0.46-0ubuntu0.24.04.2 | USN-8363-1 |
| Ubuntu 22.04 LTS | mysql-8.0 | 8.0.46-0ubuntu0.22.04.2 | USN-8363-1 |
| Ubuntu 20.04 LTS | mariadb-10.3 | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | percona-server-5.6 +1 | No fix yet | — |
| Ubuntu 14.04 LTS | mysql-5.5 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | mysql-8.0 | 8.0.46-0ubuntu0.20.04.1+esm2 | USN-8363-2 |
| Ubuntu Pro 18.04 LTS | mysql-5.7 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | mysql-5.7 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | mysql8.4 +7 | 8.4.9-1.el10_2 | RHSA-2026:20693 |
| RHEL 9 | mecab +1 | 0.996-3.module+el9.8.0+24348+9b27f387.4 | RHSA-2026:25052 |
| RHEL 9 | mecab-ipadic +1 | 2.7.0.20070801-24.module+el9.8.0+24348+9b27f387 | RHSA-2026:25052 |
| RHEL 9 | mysql +6 | 8.0.46-1.el9_8 | RHSA-2026:25052, RHSA-2026:23332 |
| RHEL 9 | mysql-test-data | 8.4.9-1.module+el9.8.0+24348+9b27f387 | RHSA-2026:25052 |
| RHEL 9 | perl-DBD-MySQL | 4.053-3.module+el9.8.0+24348+9b27f387 | RHSA-2026:25052 |
| RHEL 9 | rapidjson +2 | 1.1.0-19.module+el9.8.0+24348+9b27f387 | RHSA-2026:25052 |
| RHEL 8 | mecab +1 | 0.996-2.module+el8.10.0+22857+7f331edd | RHSA-2026:26180, RHSA-2026:25919 |
| RHEL 8 | mecab-ipadic +1 | 2.7.0.20070801-17.module+el8.10.0+22857+7f331edd | RHSA-2026:26180, RHSA-2026:25919 |
| RHEL 8 | mysql +6 | 8.0.46-1.module+el8.10.0+24370+d5a391f0 | RHSA-2026:26180, RHSA-2026:25919 |
| RHEL 8 | mysql-test-data | 8.4.9-1.module+el8.10.0+24336+5a933ab6 | RHSA-2026:26180 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | mysql8.4 +7 | 8.4.9-1.el10_2.alma.1 | ALSA-2026:20693 |
| AlmaLinux 9 | mecab +1 | 0.996-3.module_el9.6.0+152+8cbce00c.4 | ALSA-2026:25052 |
| AlmaLinux 9 | mecab-ipadic +1 | 2.7.0.20070801-24.module_el9.6.0+152+8cbce00c | ALSA-2026:25052 |
| AlmaLinux 9 | mysql +6 | 8.0.46-1.el9_8 | ALSA-2026:25052, ALSA-2026:23332 |
| AlmaLinux 9 | mysql-test-data | 8.4.9-1.module_el9.8.0+263+ff5e95cf | ALSA-2026:25052 |
| AlmaLinux 9 | perl-DBD-MySQL | 4.053-3.module_el9.8.0+235+a38ba90c | ALSA-2026:25052 |
| AlmaLinux 9 | rapidjson-doc +1 | 1.1.0-19.module_el9.6.0+152+8cbce00c | ALSA-2026:25052 |
| AlmaLinux 8 | mecab +1 | 0.996-2.module_el8.6.0+3340+d764b636 | ALSA-2026:26180, ALSA-2026:25919 |
| AlmaLinux 8 | mecab-ipadic +1 | 2.7.0.20070801-17.module_el8.10.0+3965+b415b607 | ALSA-2026:26180, ALSA-2026:25919 |
| AlmaLinux 8 | mysql +6 | 8.0.46-1.module_el8.10.0+4192+724bc664 | ALSA-2026:26180, ALSA-2026:25919 |
| AlmaLinux 8 | mysql-test-data | 8.4.9-1.module_el8.10.0+4193+cbb8e728 | ALSA-2026:26180 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | mysql8.4 | 8.4.9-1.el10_2.rocky.0.1 | RLSA-2026:20693 |
| Rocky Linux 9 | mecab | 0.996-3.module+el9.8.0+40162+a76274f1.4 | RLSA-2026:25052 |
| Rocky Linux 9 | mecab-ipadic | 2.7.0.20070801-24.module+el9.8.0+40162+a76274f1 | RLSA-2026:25052 |
| Rocky Linux 9 | mysql | 8.0.46-1.el9_8.rocky.0.1 | RLSA-2026:23332 |
| Rocky Linux 9 | perl-DBD-MySQL | 4.053-3.module+el9.8.0+40162+a76274f1 | RLSA-2026:25052 |
| Rocky Linux 9 | rapidjson | 1.1.0-19.module+el9.8.0+40162+a76274f1 | RLSA-2026:25052 |
| Rocky Linux 8 | mecab | 0.996-2.module+el8.10.0+1676+9b4b6e24 | RLSA-2026:26180, RLSA-2026:25919 |
| Rocky Linux 8 | mecab-ipadic | 2.7.0.20070801-17.module+el8.10.0+1937+28fbbc83 | RLSA-2026:26180, RLSA-2026:25919 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | mysql | 8.0.46-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | mysql8.4 +7 | 8.4.9-1.el10_2 | ELSA-2026-20693 |
| Oracle Linux 9 | mecab +1 | 0.996-3.module+el9.8.0+90919+3e0d08f6.4 | ELSA-2026-25052 |
| Oracle Linux 9 | mecab-ipadic +1 | 2.7.0.20070801-24.0.1.module+el9.8.0+90919+3e0d08f6 | ELSA-2026-25052 |
| Oracle Linux 9 | mysql +6 | 8.0.46-1.el9_8 | ELSA-2026-25052, ELSA-2026-23332 |
| Oracle Linux 9 | mysql-test-data | 8.4.9-1.module+el9.8.0+90919+3e0d08f6 | ELSA-2026-25052 |
| Oracle Linux 9 | perl-DBD-MySQL | 4.053-3.module+el9.8.0+90919+3e0d08f6 | ELSA-2026-25052 |
| Oracle Linux 9 | rapidjson-doc +1 | 1.1.0-19.module+el9.8.0+90919+3e0d08f6 | ELSA-2026-25052 |
| Oracle Linux 8 | mecab +1 | 0.996-2.module+el8.10.0+90675+bf1d9af8 | ELSA-2026-26180, ELSA-2026-25919 |
| Oracle Linux 8 | mecab-ipadic +1 | 2.7.0.20070801-17.0.1.module+el8.10.0+90675+bf1d9af8 | ELSA-2026-26180, ELSA-2026-25919 |
| Oracle Linux 8 | mysql +6 | 8.0.46-1.module+el8.10.0+90910+81928985 | ELSA-2026-26180, ELSA-2026-25919 |
| Oracle Linux 8 | mysql-test-data | 8.4.9-1.module+el8.10.0+90921+caa1c0ca | ELSA-2026-26180 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 24
- WID-SEC-2026-1199 Oracle MySQL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 10, 2026
- ALSA-2026:23332 Moderate: mysql security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:25052 Moderate: mysql:8.4 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:20693 Moderate: mysql8.4 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:25919 Moderate: mysql:8.0 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:26180 Moderate: mysql:8.4 security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2455 Oracle Solaris Drittanbieterkomponenten: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2026
- RHSA-2026:23332 Red Hat Security Advisory: mysql security update Red Hat Security Advisories (RHSA) · Oct 11, 2026
- ELSA-2026-20693 Moderate: mysql8.4 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 16, 2026
- RHSA-2026:26180 Red Hat Security Advisory: mysql:8.4 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2026:25919 Red Hat Security Advisory: mysql:8.0 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2026:25052 Red Hat Security Advisory: mysql:8.4 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2026:20693 Red Hat Security Advisory: mysql8.4 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- ELSA-2026-23332 Moderate: mysql security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 26, 2026
- ELSA-2026-25052 Moderate: mysql:8.4 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 24, 2026
- ELSA-2026-26180 Moderate: mysql:8.4 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 23, 2026
- ELSA-2026-25919 Moderate: mysql:8.0 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 23, 2026
- RLSA-2026:26180 Moderate: mysql:8.4 security update Rocky Linux Security Advisories · Jun 17, 2026
- RLSA-2026:25919 Moderate: mysql:8.0 security update Rocky Linux Security Advisories · Jun 15, 2026
- RLSA-2026:23332 Moderate: mysql security update Rocky Linux Security Advisories · Jun 11, 2026
- RLSA-2026:25052 Moderate: mysql:8.4 security update Rocky Linux Security Advisories · Jun 10, 2026
- RLSA-2026:20693 Moderate: mysql8.4 security update Rocky Linux Security Advisories · Jun 4, 2026
- USN-8363-2 mysql-8.0 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-8363-1 mysql-8.0, mysql-8.4 vulnerabilities Ubuntu Security Notices (USN) · Jun 2, 2026
References
- Oracle Advisory vendor-advisory