What is CVE-2026-26009?

CVE-2026-26009 is a critical-severity vulnerability in Karutoil Catalyst, classified under OS Command Injection. CVSS score: 9.9/10. Published 2026-02-10.

How severe is CVE-2026-26009?

Critical severity. CVSS v3 base score is 9.9 out of 10.

RCE in Karutoil Catalyst

CVE-2026-26009

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.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.005 (38.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Karutoil Catalyst — versions < 11980aaf3f46315b02777f325ba02c56b110165d

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-26009?: CVE-2026-26009 is a critical-severity vulnerability in Karutoil Catalyst, classified under OS Command Injection. CVSS score: 9.9/10. Published 2026-02-10.
How severe is CVE-2026-26009?: Critical severity. CVSS v3 base score is 9.9 out of 10.