CVE-2026-6601

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.

CVSS 4.0

2.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

CVSS 3.1

4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS

0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-26)

CWEs

CWE-400, CWE-404

Published

2026-04-20

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

References

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

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