What is CVE-2026-21719?

CVE-2026-21719 is a high-severity vulnerability in Cubecart Limited, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-04-17.

How severe is CVE-2026-21719?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Cubecart Limited

CVE-2026-21719

An OS command injection vulnerability exists in CubeCart prior to 6.6.0, which may allow a user with an administrative privilege to execute an arbitrary OS command.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.003 (48.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cubecart Limited — versions prior to 6.6.0

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

community.cubecart.com/t/cubecart-6-6-0-released-the-biggest-update-in-years/62…
jvn.jp/en/jp/JVN78422311/

Frequently asked questions

What is CVE-2026-21719?: CVE-2026-21719 is a high-severity vulnerability in Cubecart Limited, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-04-17.
How severe is CVE-2026-21719?: High severity. CVSS v3 base score is 7.2 out of 10.