CVE-2026-42087
OpenC3 COSMOS has SQL Injection in QuestDB Time-Series Database
Severity by source
Trivy's own label is CRITICAL. Rated critical by GHSA, Ruby Advisory DB.
Description
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 packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| rubygems::GitHub Security Advisory RubyGems | openc3 | 7.0.0-rc3 |
| rubygems::Ruby Advisory Database | openc3 | >= 7.0.0 |
References
- https://github.com/OpenC3/cosmos
- https://github.com/OpenC3/cosmos/commit/9ba60c09c8836a37a2e4ea67ab35fe403e041415
- https://github.com/OpenC3/cosmos/releases/tag/v7.0.0
- https://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3
- https://github.com/OpenC3/cosmos/security/advisories/GHSA-v529-vhwc-wfc5
- https://github.com/advisories/GHSA-v529-vhwc-wfc5
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/openc3/CVE-2026-42087.yml
- https://nvd.nist.gov/vuln/detail/CVE-2026-42087