CVE-2026-4239
Low
Description
A vulnerability was found in Lagom WHMCS Template up to 2.3.7. Impacted is an unknown function of the component Datatables. The manipulation results in improperly controlled modification of object prototype attributes. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
SeverityLow
CVSS3.5
Exploit probability—
ProductWHMCS Template
PublishedMar 16, 2026
First seenMar 16, 2026
Weakness typeCWE-1321Prototype pollutionCWE-94Code injection
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Lagom WHMCS Template | 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7 | — |
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