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Description

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From 5.0.0 to 6.10.1, OpenC3 COSMOS contains a critical remote code execution vulnerability reachable through the JSON-RPC API. When a JSON-RPC request uses the string form of certain APIs, attacker-controlled parameter text is parsed into values using String#convert_to_value. For array-like inputs, convert_to_value executes eval(). Because the cmd code path parses the command string before calling authorize(), an unauthenticated attacker can trigger Ruby code execution even though the request ultimately fails authorization (401). This vulnerability is fixed in 6.10.2.

PUBLISHED Reserved 2025-12-16 | Published 2026-01-13 | Updated 2026-01-13 | Assigner GitHub_M




CRITICAL: 10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Problem types

CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

Product status

>= 5.0.0, < 6.10.2
affected

References

github.com/...cosmos/security/advisories/GHSA-w757-4qv9-mghp

cve.org (CVE-2025-68271)

nvd.nist.gov (CVE-2025-68271)

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