Is openc3 affected by CVE-2026-42086?

PyPI openc3 is affected in <7.0.0.

Is CVE-2026-42086 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

medium

CVE-2026-42086

Q: Is CVE-2026-42086 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

PyPI · openc3 • RubyGems · openc3

Summary

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to version 7.0.0, the Command Sender UI uses an unsafe eval() function on array-like command parameters, which allows a user-supplied payload to execute in the browser when s

Severity: medium
EPSS: 0.2% (p10)
Also known as: GHSA-ffq5-qpvf-xq7x, PYSEC-2026-105
Published: 2026-05-04

References

https://github.com/OpenC3/cosmos/security/advisories/GHSA-ffq5-qpvf-xq7x

Related advisories

GHSA-2wvh-87g2-89hr — critical · RubyGems/openc3
CVE-2026-42087 — critical · RubyGems/openc3
CVE-2025-68271 — critical · RubyGems/openc3
CVE-2025-28389 — critical · PyPI/openc3
CVE-2025-28386 — critical · PyPI/openc3
CVE-2026-42084 — high · RubyGems/openc3
CVE-2024-46977 — high · RubyGems/openc3
CVE-2026-42085 — medium · RubyGems/openc3

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.