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CVE-2026-42087

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

Published: May 4, 2026Updated: May 8, 2026 Sources: CVE List NVDCWE-89
NVD MITRE
9.6CVSSCRITICAL
EPSS Score
0.3%
Top 76.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-89

Affected Products

cosmosopenc3
cosmosOpenC3
openc3oss-projectaka cosmos

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
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References

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

Timeline

Published
May 4, 2026
Last Updated
May 8, 2026

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