CVE-2026-42087 CRITICAL

CVE-2026-42087: OpenC3 COSMOS: SQL Injection in QuestDB Time-Series Data Base

Vendor Openc3
Product cosmos
Weakness CWE-89 · SQLi
Published May 4, 2026
Last update May 5, 2026
View on NVD All CVEs

CVSS base score

9.6/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 4, 2026 CVE published
May 5, 2026 Record updated