Is CVE-2026-16630 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-16630 being exploited in the wild.

How severe is CVE-2026-16630?

Medium severity, with a CVSS score of 5.3, published 22 July 2026.

Which products and versions are affected?

Syncfusion ej2-javascript-ui-controls up to 33.2.3.

Is there a fix for CVE-2026-16630?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-16630 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-16630?

Check whether you run Syncfusion Essential JS 2. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-16630: Syncfusion ej2-javascript-ui-controls OS command injection in license validation

CVE-2026-16630 · Severity: medium · CVSS 5.3 · Published 2026-07-22

A security vulnerability exists in the Syncfusion JavaScript UI controls library, specifically within its license validation tool. If a developer or automated system runs the license validation command in a folder containing a specially crafted configuration file, an attacker could execute unauthorized commands on the computer. This could lead to the theft of sensitive information, system disruption, or unauthorized access to development environments.

Vendors: Syncfusion.

Quick answers

Is CVE-2026-16630 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-16630 being exploited in the wild.
How severe is CVE-2026-16630?: Medium severity, with a CVSS score of 5.3, published 22 July 2026.
Which products and versions are affected?: Syncfusion ej2-javascript-ui-controls up to 33.2.3.
Is there a fix for CVE-2026-16630?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-16630 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-16630?: Check whether you run Syncfusion Essential JS 2. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An OS command injection vulnerability exists in Syncfusion ej2-javascript-ui-controls (specifically @syncfusion/ej2-base) up to version 33.2.3. The 'syncfusion-license validate' CLI command reads dependency names directly from the project's package.json file and concatenates them into a shell command string for 'npm view' without proper sanitization or escaping. This string is then executed using the 'child_process.exec()' function. A local attacker can exploit this by placing a malicious package.json in a directory where a user or CI/CD pipeline runs the validation tool, leading to arbitrary code execution with the privileges of the executing user. The vulnerability is rooted in the use of a shell-interpreting execution function instead of 'execFile' or 'spawn' with an argument array.

Affected products

Syncfusion ej2-javascript-ui-controls up to 33.2.3

Timeline

2026-06-16: disclosed: Issue reported on GitHub repository
2026-07-22: advisory: CVE published to NVD dataset

References

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