CVE-2026-42087

Critical

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.

SeverityCritical

CVSS9.6

Exploit probability—

ProductOpenc3 Cosmos

PublishedMay 4, 2026

First seenMay 4, 2026

Weakness typeCWE-89SQL injection

How to fix

Update

openc3 cosmos7.0.0 or later
openc37.0.0 or later

Affected products

Product	Affected versions	Fixed in
openc3 cosmos	6.7.0 ≤ v < 7.0.0, 7.0.0	7.0.0
openc3PyPI	6.7.0 ≤ v < 7.0.0	7.0.0

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