SB20260422118 - Multiple vulnerabilities in MySQL Shell

Description

This security bulletin contains information about 3 vulnerabilities.

1) Improper input validation (CVE-ID: CVE-2026-34319)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Shell: Core Client component in MySQL Shell. A local authenticated user can exploit this vulnerability to perform a denial of service (DoS) attack.

2) Improper input validation (CVE-ID: CVE-2026-34317)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Shell: Core Client component in MySQL Shell. A local authenticated user can exploit this vulnerability to perform a denial of service (DoS) attack.

3) Improper input validation (CVE-ID: CVE-2026-34318)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote privileged user to gain access to sensitive information.

The vulnerability exists due to improper input validation within the Shell: Core Client component in MySQL Shell. A remote privileged user can exploit this vulnerability to gain access to sensitive information.

Remediation

Install update from vendor's website.

References

• https://www.oracle.com/security-alerts/cpuapr2026.html?964484