What is CVE-2026-34018?

CVE-2026-34018 is a critical-severity vulnerability in Cubecart, classified under SQL Injection. CVSS score: 9.8/10. Published 2026-04-17.

How severe is CVE-2026-34018?

Critical severity. CVSS v3 base score is 9.8 out of 10.

SQL Injection in Cubecart

CVE-2026-34018

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.

Vulnerability class: SQL Injection

Published 2026-04-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (23.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Cubecart
Cubecart Limited — versions prior to 6.6.0

Weakness classification (CWE)

CWE-89 — SQL Injection

References

community.cubecart.com/t/cubecart-6-6-0-released-the-biggest-update-in-years/62… (Release Notes)
jvn.jp/en/jp/JVN78422311/ (Third Party Advisory)

Frequently asked questions

What is CVE-2026-34018?: CVE-2026-34018 is a critical-severity vulnerability in Cubecart, classified under SQL Injection. CVSS score: 9.8/10. Published 2026-04-17.
How severe is CVE-2026-34018?: Critical severity. CVSS v3 base score is 9.8 out of 10.