PT-2026-34096 · Oracle+1 · Mysql Server+9

Published 2026-04-21 · Updated 2026-04-26 · CVE-2026-34272

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions MySQL Server versions 9.0.0 through 9.6.0

Description An issue exists in the Server: Optimizer component of Oracle MySQL. A low privileged attacker with network access via multiple protocols can exploit this flaw to cause a hang or frequently repeatable crash, resulting in a complete denial of service (DOS) of the MySQL Server.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2026-34272

Affected Products

Mysql Server

Mariadb

Mariadb-10.0

Mariadb-10.1

Mariadb-10.3

Mariadb-10.6

Mysql-5.5

Mysql-5.7

Percona-Server-5.6

Percona-Xtradb-Cluster-5.6

References · 6

• https://osv.dev/vulnerability/UBUNTU-CVE-2026-34272 · Vendor Advisory
• https://oracle.com/security-alerts/cpuapr2026.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-34272 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-34272 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-34272 · Security Note
• https://twitter.com/CVEnew/status/2048546664764617029 · Twitter Post