CVE-2026-26009 Catalyst Affected by Remote Code Execution as Root via Containerized Install Script Execution
Users with template permissions can execute arbitrary shell commands as root on host machines due to unsandboxed install script execution.
- 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-2026-26009?
CVE-2026-26009 is a critical command injection vulnerability in karutoil catalyst, published on 10 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Catalyst is a platform built for enterprise game server hosts, game communities, and billing panel integrations. Install scripts defined in server templates execute directly on the host operating system as root via bash -c, with no sandboxing or containerization. Any user with template.create or template.update permission can define arbitrary shell commands that achieve full root-level remote code execution on every node machine in the cluster. This vulnerability is fixed in commit 11980aaf3f46315b02777f325ba02c56b110165d.
Weakness: CWE-78
Which versions are affected by CVE-2026-26009?
How do I fix CVE-2026-26009?
No fix has been published for CVE-2026-26009 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-26009 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26009 exists.
Sources
Also known as GHSA-xv5r-cpcw-8wr3.