CVE-2026-26009Public exploitNetwork attack vector

Authenticated root command execution via unsandboxed install scripts

Published Feb 10, 2026 · Updated Feb 10, 2026

OS command injection in Catalyst allows remote authenticated users to execute arbitrary commands as root on Linux cluster nodes. The agent's install_server function in websocket_handler.rs passes a template's final_script directly to bash -c on the bare host without container isolation. An account with template.create plus admin.write or node access can trigger installation, gaining full control of the selected node.

CVSS severity9.9
Critical
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Catalyst allows remote authenticated users to execute arbitrary commands as root on Linux cluster nodes. The agent's install_server function in websocket_handler.rs passes a template's final_script directly to bash -c on the bare host without container isolation. An account with template.create plus admin.write or node access can trigger installation, gaining full control of the selected node.

The record

CVE
CVE-2026-26009
Published
Feb 10, 2026
Updated
Feb 10, 2026
Vendor
catalystctl
Product
Catalyst
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 11980aaf3f46315b02777f325ba02c56b110165d

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

catalystctl · Catalystversion=< 11980aaf3f46315b02777f325ba02c56b110165d

Published CVSS scores

9.9GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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