CVE-2026-6601

MEDIUM

Lagom WHMCS Template Datatables resource consumption

Title source: cna
STIX 2.1

Description

A vulnerability has been found in Lagom WHMCS Template up to 2.4.2. This impacts an unknown function of the component Datatables. The manipulation leads to resource consumption. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

References (4)

Core 4
Core References
Vdb Entry vdb-entry
VDB-358236 | Lagom WHMCS Template Datatables resource consumption
https://vuldb.com/vuln/358236
Signature, Permissions Required signature permissions-required
VDB-358236 | CTI Indicators (IOB, IOC, TTP)
https://vuldb.com/vuln/358236/cti
Third Party Advisory third-party-advisory
Submit #791943 | Lagom WHMCS Template ≤ 2.4.2 Denial of Service
https://vuldb.com/submit/791943

Scores

CVSS v3 4.3
EPSS 0.0028
EPSS Percentile 19.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-400 CWE-404
Status published
Products (3)
Lagom/WHMCS Template 2.4.0
Lagom/WHMCS Template 2.4.1
Lagom/WHMCS Template 2.4.2
Published Apr 20, 2026
Tracked Since Apr 20, 2026