CVE-2026-6601 Lagom WHMCS Template Datatables resource consumption
Remote attackers can cause resource consumption in the Lagom WHMCS Template via the Datatables component, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6601?
CVE-2026-6601 is a medium-severity denial of service vulnerability in Lagom WHMCS Template, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-6601?
How do I fix CVE-2026-6601?
No fix has been published for CVE-2026-6601 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-6601 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6601 exists.
Sources
Also known as GHSA-rv83-rw8p-jww8.