CVE-2026-4239

LOW

Lagom WHMCS Template Datatables prototype pollution

Title source: cna

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.

References (5)

[Vdb Entry] https://vuldb.com/?id.351181

[Signature, Permissions Required] https://vuldb.com/?ctiid.351181

[Third Party Advisory] https://vuldb.com/?submit.771350

[Exploit] https://github.com/devsamuelsantiago/lagom-prototype-pollution-poc/

View Exploit ZIP pw:eip

[Exploit] https://github.com/devsamuelsantiago/lagom-prototype-pollution-poc/blob/main/lagom-prototype-pollution-poc.js

Scores

CVSS v3 3.5

EPSS 0.0004

EPSS Percentile 11.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Details

CWE

CWE-1321 CWE-94

Status published

Products (8)

Lagom/WHMCS Template 2.3.0

Lagom/WHMCS Template 2.3.1

Lagom/WHMCS Template 2.3.2

Lagom/WHMCS Template 2.3.3

Lagom/WHMCS Template 2.3.4

Lagom/WHMCS Template 2.3.5

Lagom/WHMCS Template 2.3.6

Lagom/WHMCS Template 2.3.7

Published Mar 16, 2026

Tracked Since Mar 16, 2026