CRITICALVulnerability
Verified
Global

NVD CRITICAL: CVE-2026-86121 — Cua computer-server versions before 0.3.42 skip authentication when the CONTAINE...

·Source: NIST NVD

Updated:

Executive Summary

Cua computer-server versions before 0.3.42 skip authentication when the CONTAINER_NAME environment variable is unset and bind to all interfaces by default, allowing unauthenticated attackers to execute arbitrary commands. Attackers can reach TCP port 8000 to run shell commands via the run_command endpoint, read and write arbitrary files through file operation endpoints, and access interactive PTY

Analysis

Cua computer-server versions before 0.3.42 skip authentication when the CONTAINER_NAME environment variable is unset and bind to all interfaces by default, allowing unauthenticated attackers to execute arbitrary commands. Attackers can reach TCP port 8000 to run shell commands via the run_command endpoint, read and write arbitrary files through file operation endpoints, and access interactive PTY shells without authentication. CVSS Score: 9.8. Published: 2026-09-05T10:16:43.463.

Indicators of Compromise (1)

CVE (1)
CVE-2026-86121
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Sep 5, 2026. Verified by: NIST.

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