CVE-2026-48773
June 19, 2026, 8:16 p.m.
9.8
Critical
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.
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Proxysql |
|
|
| Mysql |
|
|
| Postgresql |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-787
Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| a | proxysql | proxysql | 2.0.18-3.0.8 | / | / | / | / | / | / | / |
| a | proxysql | proxysql | 3.0.9 | / | / | / | / | / | / | / |
| a | mysql | mysql | / | / | / | / | / | / | / | / |
| a | postgresql | postgresql | / | / | / | / | / | / | / | / |
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: LOW
- Privileges Required: NONE
- Scope: UNCHANGED
- Confidentiality Impact: HIGH
- Integrity Impact: HIGH
- Availability Impact: HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Timeline
Published: June 19, 2026, 8:16 p.m.
Last Modified: June 19, 2026, 8:16 p.m.
Last Modified: June 19, 2026, 8:16 p.m.
Status : Received
CVE has been recently published to the CVE List and has been received by the NVD.
More infoSource
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.