CVE-2026-48773

critical · 9.8

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.

9.8

CVSS

0.5%

EPSS (exploit prob.)

40th

EPSS percentile

2026-06-19

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-787

Affected products

Vendor	Product	Affected versions
proxysql	proxysql	>= 2.0.18, < 3.0.9

Check a specific version with /api/v1/cve/match.

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-48773