๐Ÿ›ก๏ธ CVE-2026-42085
๐ŸŸก CVSS 4.3 โ€” Medium โš ๏ธ Exploit Public CWE-23 NVD
4.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to versions 6.10.5 and 7.0.0-rc3, OpenC3 COSMOS contains a design flaw in the save_tool_config() function that allows saving tool configuration files at arbitrary locations inside the shared /plugins directory tree by supplying crafted configuration filenames. Although the implementation sufficiently mitigates standard path traversal attacks, by canonicalizing filename to an absolute path, all plugins share this same root directory. That enables users to create arbitrary file structures and overwrite existing configuration files within the shared /plugins directory. This issue has been patched in versions 6.10.5 and 7.0.0-rc3.

Details

Severity MEDIUM
CVSS Score 4.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE CWE-23
Public Exploit โš ๏ธ Yes
Source NVD
Published 2026-05-04
Updated 2026-06-15
Modified 2026-05-08

Affected Packages

Software From version Fixed in
cosmos โ€” โ€”
openc3 7.0.0.pre.rc1 7.0.0-rc3
unknown โ€” โ€”

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