9.8

CVE-2026-48773

Exploit

ProxySQL pre-auth heap overflow in MySQL and PostgreSQL first-packet handling

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Proxysql ≫ Proxysql Version >= 2.0.18 < 3.0.9
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.47% 0.381
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://github.com/sysown/proxysql/releases/tag/v3.0.9
Release Notes
https://github.com/sysown/proxysql/security/advisories/GHSA-58ww-865x-grpr
Vendor Advisory
Exploit
Mitigation