Relative Path Traversal Affecting openc3 package, versions <6.10.5>=7.0.0.pre.rc1, <7.0.0-rc3
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-RUBY-OPENC3-16416370
- published4 May 2026
- disclosed22 Apr 2026
- creditctrlsill
Introduced: 22 Apr 2026
NewCVE-2026-42085 (opens in a new tab)How to fix?
Upgrade openc3 to version 6.10.5, 7.0.0-rc3 or higher.
Overview
Affected versions of this package are vulnerable to Relative Path Traversal via the ToolConfigModel tool and config name handling in the Ruby and Python models. An attacker can write or delete arbitrary files within the shared /plugins directory by supplying tool or config names containing /, \, or .. when saving, loading, listing, or deleting tool configs. This can corrupt plugin data, overwrite configuration files, and disrupt tool behavior for users relying on the affected plugin workspace.