CVE-2026-48773

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Source
https://cve.org/CVERecord?id=CVE-2026-48773
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48773.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-48773
Aliases
  • GHSA-58ww-865x-grpr
Published
2026-06-19T19:27:12.183Z
Modified
2026-07-08T08:07:13.940561370Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
ProxySQL pre-auth heap overflow in MySQL and PostgreSQL first-packet handling
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48773.json",
    "cwe_ids": [
        "CWE-787"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/sysown/proxysql

Affected ranges

Type
GIT
Repo
https://github.com/sysown/proxysql
Events
Introduced
1c2b7e410551affac4e26d1b67646a2e51bd43da
Fixed
7ddb3dc015d1440e8a0fb0bbafa2df9aaaa2669d
Database specific 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "2.0.18"
        },
        {
            "fixed": "3.0.9"
        }
    ]
}

Affected versions

2.*
2.2.0
2.4.0
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
2.4.6
2.4.7
2.5.0
2.5.1
2.5.2
2.5.3
2.5.4
2.6.0
3.*
3.0.2
3.0.3
3.0.4
3.0.5
3.0.6
3.0.8
3.0.9
v2.*
v2.0.18
v2.1.1
v2.2.0
v2.4.0
v2.4.1
v2.4.2
v2.4.3
v2.4.4
v2.4.5
v2.4.6
v2.4.7
v2.5.0
v2.5.1
v2.5.2
v2.5.3
v2.5.4
v2.5.5
v3.*
v3.0.0-alpha
v3.0.1
v3.0.2
v3.0.3
v3.0.4
v3.0.5
v3.0.6
v3.0.7
v3.0.8
v3.1.6
v3.1.7
v3.1.8
v4.*
v4.0.6
v4.0.7
v4.0.8

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48773.json"