CVE-2026-34276
Denial of Service in Oracle MySQL Group Replication Plugin
Publication date: 2026-04-21
Last updated on: 2026-04-23
Assigner: Oracle
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| oracle | mysql_server | From 8.0.0 (inc) to 8.0.45 (inc) |
| oracle | mysql_server | From 8.4.0 (inc) to 8.4.8 (inc) |
| oracle | mysql_server | From 9.0.0 (inc) to 9.6.0 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-400 | The product does not properly control the allocation and maintenance of a limited resource. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the MySQL Server product of Oracle MySQL, specifically in the Server: Group Replication Plugin component. It affects supported versions 8.0.0-8.0.45, 8.4.0-8.4.8, and 9.0.0-9.6.0.
The vulnerability is easily exploitable by a low privileged attacker who has network access via multiple protocols. Such an attacker can compromise the MySQL Server.
Successful exploitation can cause the MySQL Server to hang or crash repeatedly, resulting in a complete denial of service (DoS).
How can this vulnerability impact me? :
The primary impact of this vulnerability is on the availability of the MySQL Server.
An attacker with low privileges and network access can cause the server to hang or crash repeatedly, leading to a complete denial of service (DoS).
This can disrupt applications and services relying on the MySQL Server, potentially causing downtime and loss of service continuity.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The vulnerability allows a low privileged attacker to cause a denial of service (DoS) by hanging or crashing the MySQL Server, impacting availability.
However, there is no indication from the provided information that this vulnerability leads to unauthorized disclosure, modification, or loss of data.
Therefore, while availability impacts could affect compliance with standards that require system availability, such as HIPAA's availability requirements, there is no direct information linking this vulnerability to compliance violations for standards like GDPR or HIPAA.