Is CVE-2026-34318 in the CISA KEV catalog?

No. CVE-2026-34318 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-34318?

CVE-2026-34318 has a CVSS v3 base score of 5.8 (Moderate).

What is the EPSS score for CVE-2026-34318?

CVE-2026-34318 has an EPSS score of 0.26% (18th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-34318?

Upgrade mysql-8.0 on debian unstable to 8.0.46-1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2026-34318

MEDIUM

5.8

CVSS v3

NVD

Description

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).

CWE-200Information Exposure

How to fix

Remediation Available

mysql-8.0Debian

Fixed in:8.0.46-1CVE-2026-34318

mysql-8.0Ubuntu

Fixed in:8.0.46-0ubuntu0.20.04.1+esm2USN-8363-2

Fixed in:8.0.46-0ubuntu0.22.04.2USN-8363-1

Fixed in:8.0.46-0ubuntu0.24.04.2USN-8363-1

mysql-8.4Ubuntu

Fixed in:8.4.9-0ubuntu0.25.10.1USN-8363-1

mysql-serverUbuntu

Fixed in:8.4.9-0ubuntu0.25.10.1USN-8363-1

mysql-server-8.0Ubuntu

Fixed in:8.0.46-0ubuntu0.20.04.1+esm2USN-8363-2

Fixed in:8.0.46-0ubuntu0.22.04.2USN-8363-1

Fixed in:8.0.46-0ubuntu0.24.04.2USN-8363-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N

Exploit Intelligence

0.26%probability of exploitation in 30 days

18thpercentile

Low risk: more likely to be exploited than 18% of all known CVEs.

References

Vendor Advisory1

oracle.com

Related Vulnerabilities

Other CWE-200 (Information Exposure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24919	High	8.6	100%	KEV + Ransom	-
CVE-2020-14181	Medium	5.3	100%	-	Fix
CVE-2021-34429	Medium	5.3	99%	-	Fix
CVE-2018-11409	Medium	5.3	98%	-	-
CVE-2021-41277	Critical	10.0	97%	KEV	-
CVE-2016-2183	High	7.5	96%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-05.