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
CVE-2026-34304 is a medium severity vulnerability in Oracle MySQL Server affecting versions 8. 0. 0 through 8. 0. 45, 8. 4. 0 through 8. 4. 8, and 9. 0.
AI Analysis
Technical Summary
This vulnerability in the InnoDB component of Oracle MySQL Server allows a high privileged attacker with network access to cause a hang or repeated crash, resulting in a complete denial of service. It affects multiple supported MySQL Server versions from 8.0.0 to 9.6.0. The CVSS 3.1 base score is 4.9, reflecting a medium severity with an impact limited to availability (no confidentiality or integrity impact). Oracle's April 2026 Critical Patch Update addresses this vulnerability among 481 security patches. The vendor strongly recommends applying these patches promptly to mitigate the risk.
Potential Impact
Successful exploitation results in denial of service by causing the MySQL Server to hang or crash repeatedly. There is no impact on confidentiality or integrity. The vulnerability requires high privileges and network access via multiple protocols. No known active exploits have been reported.
Mitigation Recommendations
Oracle has released 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.
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
CVE-2026-34304 is a medium severity vulnerability in Oracle MySQL Server affecting versions 8. 0. 0 through 8. 0. 45, 8. 4. 0 through 8. 4. 8, and 9. 0.
CVSS v3.1
Score 4.9medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in the InnoDB component of Oracle MySQL Server allows a high privileged attacker with network access to cause a hang or repeated crash, resulting in a complete denial of service. It affects multiple supported MySQL Server versions from 8.0.0 to 9.6.0. The CVSS 3.1 base score is 4.9, reflecting a medium severity with an impact limited to availability (no confidentiality or integrity impact). Oracle's April 2026 Critical Patch Update addresses this vulnerability among 481 security patches. The vendor strongly recommends applying these patches promptly to mitigate the risk.
Potential Impact
Successful exploitation results in denial of service by causing the MySQL Server to hang or crash repeatedly. There is no impact on confidentiality or integrity. The vulnerability requires high privileges and network access via multiple protocols. No known active exploits have been reported.
Mitigation Recommendations
Oracle has released 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.
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: 4/29/2026, 11:40:09 AM
Last updated: 6/6/2026, 3:12:25 AM
Views: 59
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