VULNERABILITY INTELLIGENCE
CVE-2026-48773
CVSS score9.8 CRITICAL
EPSS probability0.69%
CISA KEVNot currently listed
Published2026-06-19
Last modified2026-10-25
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.