CVE-2026-86121Cua computer-server before 0.3.42 Unauthenticated RCE via Desktop Control
Updated under an hour ago ()
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It affects trycua cua-computer-server. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-306
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
trycua cua-computer-server trycua:cua_computer_server (from the name) | before 0.3.42 | CNA record |
References
- https://github.com/trycua/cua/issues/1892issue-tracking
- https://github.com/trycua/cua/blob/10a2e71792db/libs/python/computer-server/computer_server/main.pytechnical-description
- https://github.com/trycua/cua/blob/10a2e71792db/libs/python/computer-server/computer_server/cli.pytechnical-description
- https://github.com/trycua/cua/commit/59cf25c0ec54patch
- https://github.com/trycua/cuaproduct
- https://www.vulncheck.com/advisories/cua-computer-server-before-0.3.42-unauthenticated-rce-via-desktop-controlthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.