CVE-2026-42087: OPENC3 Cosmos

Critical severity, CVSS 9.6. EPSS: 0.4% chance of exploitation in the next 30 days.

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From version 6.7.0 to before version 7.0.0-rc3, a SQL injection vulnerability exists in the Time-Series Database (TSDB) component of COSMOS. The tsdb_lookup function in the cvt_model.rb file directly places user-supplied input into a SQL query without sanitizing the input. As a result, a user can break out of the initial SQL statement and execute arbitrary SQL commands, including deleting data. This issue has been patched in version 7.0.0-rc3.

Affected products

• OPENC3 Cosmos: from 6.7.0, before 7.0.0 (fixed in 7.0.0); version 7.0.0 only

Published 2026-05-04. Last modified 2026-06-17.