CVE-2026-86121

Description

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.

References

https://www.vulncheck.com/advisories/cua-computer-server-before-0.3.42-unauthenticated-rce-via-desktop-control

https://github.com/trycua/cua/issues/1892

https://github.com/trycua/cua/commit/59cf25c0ec54

https://github.com/trycua/cua/blob/10a2e71792db/libs/python/computer-server/computer_server/main.py

https://github.com/trycua/cua/blob/10a2e71792db/libs/python/computer-server/computer_server/cli.py

https://github.com/trycua/cua

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS