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CVE-2026-42087

37
FAUCET Score

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.

First published: May 4, 2026Last modified: May 5, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.7.0, < 7.0.0CPE matchmatch criteria
cpe:2.3:a:openc3:cosmos:*:*:*:*:open_source:*:*:*
7.0.0CPE matchmatch criteria
cpe:2.3:a:openc3:cosmos:7.0.0:rc1:*:*:open_source:*:*:*
7.0.0CPE matchmatch criteria
cpe:2.3:a:openc3:cosmos:7.0.0:rc2:*:*:open_source:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.1
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.32%
Probability of exploitation in next 30 days
EPSS Percentile
24.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 13th percentile among its peer group of 1,128 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: openc3Fixed in: 7.0.0-rc3

Vendor Advisories (1)

rubygemsGHSA-v529-vhwc-wfc5critical

OpenC3 COSMOS has SQL Injection in QuestDB Time-Series Database

Apr 23, 2026

References

github.com / OpenC3/cosmos/commit/9ba60c09c8836a37a2e4ea67ab35fe403e041415
Patch
github.com / OpenC3/cosmos/releases/tag/v7.0.0-rc3
Release Notes
github.com / OpenC3/cosmos/security/advisories/GHSA-v529-vhwc-wfc5
ExploitVendor Advisory