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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/sysown/proxysql/security/advisories/GHSA-58ww-865x-grpr Exploit, Mitigation, Vendor Advisory
- https://github.com/sysown/proxysql/security/advisories/GHSA-58ww-865x-grpr Exploit, Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.8 · proxysqlNVD modified 2026-10-25 23:10
Affected (CPE criteria) 1
cpe:2.3:a:proxysql:proxysql:*:*:*:*:*:*:*:*
References 3
- https://github.com/sysown/proxysql/releases/tag/v3.0.9 Release Notes
- https://github.com/sysown/proxysql/security/advisories/GHSA-58ww-865x-grpr Exploit, Mitigation, Vendor Advisory
- https://github.com/sysown/proxysql/security/advisories/GHSA-58ww-865x-grpr Exploit, Mitigation, Vendor Advisory