How severe is CVE-2026-21719?

CVE-2026-21719 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-21719 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-21719?

CVE-2026-21719 affects Cubecart. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-21719?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-21719 have an EU (EUVD) identifier?

Yes. CVE-2026-21719 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23366.

When was CVE-2026-21719 published?

CVE-2026-21719 was published on 2026-04-17 and last updated on 2026-06-17.

CVE-2026-21719

CVE-2026-21719 is a high-severity vulnerability in Cubecart with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v4: 8.6
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23366
Weakness: CWE-78
Affected product: Cubecart
Published: 2026-04-17
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-21719?: CVE-2026-21719 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-21719 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-21719?: CVE-2026-21719 affects Cubecart. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-21719?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-21719 have an EU (EUVD) identifier?: Yes. CVE-2026-21719 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23366.
When was CVE-2026-21719 published?: CVE-2026-21719 was published on 2026-04-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cubecart:cubecart:*:*:*:*:*:*:*:*

More vulnerabilities in Cubecart

CVE-2026-34018 — Critical (CVSS 9.8): An SQL injection vulnerability exists in CubeCart prior to 6.6.0, which may allow an attacker to execute an arbitrary…
CVE-2024-34832 — Critical (CVSS 9.8): Directory Traversal vulnerability in CubeCart v.6.5.5 and before allows an attacker to execute arbitrary code via a…
CVE-2018-20716 — Critical (CVSS 9.8): CubeCart before 6.1.13 has SQL Injection via the validate[] parameter of the "I forgot my Password!" feature.
CVE-2013-1465 — Critical (CVSS 9.8): The Cubecart::_basket method in classes/cubecart.class.php in CubeCart 5.0.0 through 5.2.0 allows remote attackers to…
CVE-2023-38130 — High (CVSS 8.1): Cross-site request forgery (CSRF) vulnerability in CubeCart prior to 6.5.3 allows a remote unauthenticated attacker to…
CVE-2024-33438 — High (CVSS 8.0): File Upload vulnerability in CubeCart before 6.5.5 allows an authenticated user to execute arbitrary code via a crafted…

All CVEs affecting Cubecart →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-56004 — Critical (CVSS 10.0): A shellcode injection in the mercurial handler of the obs tar_scm source service before version 0.12.4 could be used by…
CVE-2026-56415 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability within the debug.pl script that is…
CVE-2026-56413 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens…
CVE-2026-49869 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in…
CVE-2026-49261 — Critical (CVSS 10.0): MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through…
CVE-2026-10520 — Critical (CVSS 10.0): An OS Command Injection vulnerability in Ivanti Sentry before the R10.5.2, R10.6.2 and R10.7.1 versions allows a…

Browse all CWE-78 (OS Command Injection) vulnerabilities →