PT-2026-34102 · Oracle+3 · Mysql Server+3

CVE-2026-34278

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Published

2026-04-21

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Updated

2026-06-15

CVSS v3.1

6.5

Medium

VectorAV: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 8.0.0 through 8.0.45
Description An issue in the Server: Optimizer component of Oracle MySQL allows a high privileged attacker with network access via multiple protocols to compromise the server. Successful exploitation can lead to a hang or frequently repeatable crash, resulting in a complete denial of service (DOS), which is a condition where the system becomes unavailable to legitimate users.
Recommendations Update MySQL Server to a version later than 8.0.45.

Exploit

Fix

DoS

Resource Exhaustion

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Weakness Enumeration

Related Identifiers

ALSA-2026:23332
ALSA-2026:25919
AZL-83115
CVE-2026-34278
OESA-2026-2118
OESA-2026-2119
OESA-2026-2120
OESA-2026-2153
OESA-2026-2154
RHSA-2026:23332
USN-8363-1
USN-8363-2

Affected Products

Linuxmint
Mysql Server
Rocky Linux
Ubuntu