CVE-2026-34304: Easily exploitable vulnerability allows high 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. in Oracle Corporation MySQL Server
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). 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 high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
AI Analysis
Technical Summary
This vulnerability in the InnoDB component of Oracle MySQL Server allows an attacker with high privileges and network access to cause a hang or repeated crash of the server, resulting in a complete denial of service. The affected versions span multiple MySQL Server releases from 8.0.0 to 9.6.0. The CVSS 3.1 base score is 4.9, reflecting a medium severity focused on availability impact. The vulnerability does not compromise data confidentiality or integrity. Oracle's April 2026 Critical Patch Update includes security patches addressing this issue among others. The vendor strongly recommends applying these patches promptly to prevent exploitation.
Potential Impact
Successful exploitation results in denial of service by causing the MySQL Server to hang or crash repeatedly. There is no impact on data confidentiality or integrity. The vulnerability requires a high privileged attacker with network access, limiting the attack surface to authorized users or compromised accounts with elevated privileges.
Mitigation Recommendations
Oracle has released security patches for this vulnerability as part of the April 2026 Critical Patch Update. Users should apply the relevant patches for their MySQL Server versions (8.0.0-8.0.45, 8.4.0-8.4.8, 9.0.0-9.6.0) without delay. No alternative mitigations or workarounds are specified. Patch status is confirmed by the vendor advisory at https://www.oracle.com/security-alerts/cpuapr2026.html.
CVE-2026-34304: Easily exploitable vulnerability allows high 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. in Oracle Corporation MySQL Server
Description
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). 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 high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in the InnoDB component of Oracle MySQL Server allows an attacker with high privileges and network access to cause a hang or repeated crash of the server, resulting in a complete denial of service. The affected versions span multiple MySQL Server releases from 8.0.0 to 9.6.0. The CVSS 3.1 base score is 4.9, reflecting a medium severity focused on availability impact. The vulnerability does not compromise data confidentiality or integrity. Oracle's April 2026 Critical Patch Update includes security patches addressing this issue among others. The vendor strongly recommends applying these patches promptly to prevent exploitation.
Potential Impact
Successful exploitation results in denial of service by causing the MySQL Server to hang or crash repeatedly. There is no impact on data confidentiality or integrity. The vulnerability requires a high privileged attacker with network access, limiting the attack surface to authorized users or compromised accounts with elevated privileges.
Mitigation Recommendations
Oracle has released security patches for this vulnerability as part of the April 2026 Critical Patch Update. Users should apply the relevant patches for their MySQL Server versions (8.0.0-8.0.45, 8.4.0-8.4.8, 9.0.0-9.6.0) without delay. No alternative mitigations or workarounds are specified. Patch status is confirmed by the vendor advisory at https://www.oracle.com/security-alerts/cpuapr2026.html.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-03-26T19:48:45.679Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cpuapr2026.html","vendor":"Oracle"}]
Threat ID: 69e7e5a819fe3cd2cdf9f9a9
Added to database: 4/21/2026, 9:01:28 PM
Last enriched: 4/21/2026, 9:47:46 PM
Last updated: 4/22/2026, 7:14:35 AM
Views: 7
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