CVE-2026-34018

Medium

Published: 17 April 2026

Published

17 April 2026

Modified

20 April 2026

KEV Added

—

Patch

—

CVSS Score v4 5.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Score 0.0018 7.6th percentile

Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-34018 is a medium-severity SQL Injection (CWE-89) vulnerability in Cubecart Cubecart. Its CVSS base score is 5.1 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 7.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2026-34018 is an SQL injection vulnerability (CWE-89) in CubeCart versions prior to 6.6.0. The flaw allows an attacker to execute arbitrary SQL statements on the product, earning a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), marking it as critical due to its high impacts across confidentiality, integrity, and availability.

The vulnerability can be exploited by any unauthenticated attacker with network access, requiring low complexity and no user interaction. Successful exploitation enables arbitrary SQL execution, potentially allowing data exfiltration, modification, deletion, or denial of service on the underlying database.

Mitigation is addressed in CubeCart 6.6.0, released as described in the official community announcement, which notes it as the biggest update in years. The Japanese Vulnerability Notes advisory (JVN#78422311) provides further details on the issue and recommended actions.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-23368

Vulnerability details

An SQL injection vulnerability exists in CubeCart prior to 6.6.0, which may allow an attacker to execute an arbitrary SQL statement on the product.

CWE(s): CWE-89

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

Why these techniques?

SQL injection in public-facing CubeCart web application directly enables T1190 Exploit Public-Facing Application for unauthenticated network attackers to achieve arbitrary SQL execution.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0