CVE-2026-6601

MEDIUM 4.3

Lagom WHMCS Template Datatables resource consumption

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-400 CWE-404
Vendor	lagom
Product	whmcs template
Published	Apr 20, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Lagom / WHMCS Template

2.4.0 2.4.1 2.4.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/358236 vuldb.com: https://vuldb.com/vuln/358236/cti vuldb.com: https://vuldb.com/submit/791943 github.com: https://github.com/devsamuelsantiago/lagom-whmcs-dos-poc

Credits

🔍 s4nnty (VulDB User) VulDB CNA Team