CVE-2026-42087

OpenC3 COSMOS: SQL Injection in QuestDB Time-Series Data Base

CVSS 9.6 CRITICALEPSS 0.3%CWE-89

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.6EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

04 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Affected products

OpenC3 · cosmos

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References

https://github.com/OpenC3/cosmos/commit/9ba60c09c8836a37a2e4ea67ab35fe403e041415 https://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3 https://github.com/OpenC3/cosmos/security/advisories/GHSA-v529-vhwc-wfc5