CVE-2026-34276

CVE Details

Release Date:	2026-04-21
Impact:	Moderate	What is this?

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Group Replication Plugin). 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).

See more information about CVE-2026-34276 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	6.5
Vector String:	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (mecab)	ELSA-2026-25919	2026-06-23
Oracle Linux version 8 (mecab)	ELSA-2026-26180	2026-06-23
Oracle Linux version 8 (mecab-ipadic)	ELSA-2026-25919	2026-06-23
Oracle Linux version 8 (mecab-ipadic)	ELSA-2026-26180	2026-06-23
Oracle Linux version 8 (mysql)	ELSA-2026-25919	2026-06-23
Oracle Linux version 8 (mysql)	ELSA-2026-26180	2026-06-23