CVE-2026-48773

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.

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Produits concernés

• sysown proxysql
• Proxysql proxysql

Scores CVSS

Faiblesses (CWE)

• CWE-787

Références

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

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories