ProxySQL is a proxy for MySQL and its forks, as well as PostgreSQL. Versions 2.0.18 through 3.0.8 have a pre-authentication heap memory corruption vulnerability in the MySQL and PostgreSQL protocol first-read paths. A remote unauthenticated client can declare an oversized first packet length, and ProxySQL passes that attacker-controlled length directly to `recv()` while writing into a fixed 32 KB input queue. Version 3.0.9 patches the issue.
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History
Fri, 19 Jun 2026 20:00:00 +0000
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| Description | ProxySQL is a proxy for MySQL and its forks, as well as PostgreSQL. Versions 2.0.18 through 3.0.8 have a pre-authentication heap memory corruption vulnerability in the MySQL and PostgreSQL protocol first-read paths. A remote unauthenticated client can declare an oversized first packet length, and ProxySQL passes that attacker-controlled length directly to `recv()` while writing into a fixed 32 KB input queue. Version 3.0.9 patches the issue. | |
| Title | ProxySQL pre-auth heap overflow in MySQL and PostgreSQL first-packet handling | |
| Weaknesses | CWE-787 | |
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cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-19T19:27:12.183Z
Reserved: 2026-05-22T19:39:05.357Z
Link: CVE-2026-48773
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
Updated: 2026-06-19T21:30:17Z