CVE-2026-42085: CWE-23: Relative Path Traversal in OpenC3 cosmos
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.
AI Analysis
Technical Summary
OpenC3 COSMOS versions before 6.10.5 and between 7.0.0.pre.rc1 and 7.0.0-rc3 contain a design flaw in the save_tool_config() function. The function allows saving configuration files with crafted filenames that traverse paths relative to the shared /plugins directory. While the implementation canonicalizes filenames to absolute paths to mitigate standard path traversal, the shared root directory for all plugins allows users to create arbitrary directory structures and overwrite configuration files within /plugins. This can lead to unauthorized modification of plugin configuration files. The issue is fixed in versions 6.10.5 and 7.0.0-rc3.
Potential Impact
The vulnerability allows users with permission to save tool configurations to overwrite existing configuration files or create arbitrary file structures within the shared /plugins directory. This can lead to unauthorized modification of plugin configurations, potentially impacting the integrity of the system's plugin environment. There is no direct confidentiality or availability impact reported. No known exploits are currently in the wild.
Mitigation Recommendations
This vulnerability has been patched in OpenC3 COSMOS versions 6.10.5 and 7.0.0-rc3. Users should upgrade to these or later versions to remediate the issue. No additional mitigation actions are indicated by the vendor advisory.
CVE-2026-42085: CWE-23: Relative Path Traversal in OpenC3 cosmos
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenC3 COSMOS versions before 6.10.5 and between 7.0.0.pre.rc1 and 7.0.0-rc3 contain a design flaw in the save_tool_config() function. The function allows saving configuration files with crafted filenames that traverse paths relative to the shared /plugins directory. While the implementation canonicalizes filenames to absolute paths to mitigate standard path traversal, the shared root directory for all plugins allows users to create arbitrary directory structures and overwrite configuration files within /plugins. This can lead to unauthorized modification of plugin configuration files. The issue is fixed in versions 6.10.5 and 7.0.0-rc3.
Potential Impact
The vulnerability allows users with permission to save tool configurations to overwrite existing configuration files or create arbitrary file structures within the shared /plugins directory. This can lead to unauthorized modification of plugin configurations, potentially impacting the integrity of the system's plugin environment. There is no direct confidentiality or availability impact reported. No known exploits are currently in the wild.
Mitigation Recommendations
This vulnerability has been patched in OpenC3 COSMOS versions 6.10.5 and 7.0.0-rc3. Users should upgrade to these or later versions to remediate the issue. No additional mitigation actions are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-23T19:17:30.566Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f8dc9fcbff5d86103c0100
Added to database: 5/4/2026, 5:51:27 PM
Last enriched: 5/4/2026, 6:07:15 PM
Last updated: 5/5/2026, 5:58:43 AM
Views: 4
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