CVE-2026-48773

CRITICAL EPSS 27.7%
Published Jun 19, 20261w ago · Modified Jun 23, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Jun 19, 2026 1w ago
Last Modified Jun 23, 2026 1w ago

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.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
27.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

References 2

  • github.com https://github.com/sysown/proxysql/releases/tag/v3.0.9
  • github.com https://github.com/sysown/proxysql/security/advisories/GHSA-58ww-865x-grpr

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.