CVE-2026-34318

Vulnerability in the MySQL Shell product of Oracle MySQL (component: Shell: Core Client). Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 and 9.0.0-9.6.0. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Shell. While the vulnerability is in MySQL Shell, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Shell accessible data. CVSS 3.1 Base Score 5.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N).

Published: 2026-04-21 Last update: 2026-05-05 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-34318 is rated Low Risk (28.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-34318

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-23 0.03% 0.05% +0.02%
2 2026-04-22 — 0.03% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-34318

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.3 4.0 [email protected]

Weakness enumeration for CVE-2026-34318

GitHub Security Advisory for CVE-2026-34318

GHSA-m58j-v3j6-3hqq · Severity: medium — Vulnerability in the MySQL Shell product of Oracle MySQL (component: Shell: Core Client). ...

OS Trackers for CVE-2026-34318

vendor priority summary link
debian not yet assigned CVE-2026-34318 not yet assigned priority: Debian including 1 source packages (mysql-8.0), 1 status rows across 1 suites (sid): resolved 1. https://security-tracker.debian.org/tracker/CVE-2026-34318
ubuntu medium CVE-2026-34318 medium priority: Ubuntu including 11 source packages (mariadb, mariadb-10.0, …), 64 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 36, needs-triage 11, not-affected 11, ignored 4, released 2. https://ubuntu.com/security/CVE-2026-34318

Affected software / configurations for CVE-2026-34318

Vendor Product Version Raw CPE
oracle mysql >= 8.0.0, <= 8.0.45 cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
oracle mysql >= 8.4.0, <= 8.4.8 cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
oracle mysql >= 9.0.0, <= 9.6.0 cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*

References for CVE-2026-34318

cvelogic Threat Intelligence