CVE-2026-42087

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 v3.1 Score

9.6

CRITICAL

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

EPSS — Exploit Prediction

0.0003

Probability of exploitation

0.08%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-89 SQL Injection

Affected Products

Vendor	Product	Versions
openc3	cosmos	6.7.0 — 7.0.0
openc3	cosmos	All
openc3	cosmos	All

References

Advisories & Patches

https://github.com/OpenC3/cosmos/commit/9ba60c09c8836a37a2e4ea67ab35fe403e041415 https://github.com/OpenC3/cosmos/security/advisories/GHSA-v529-vhwc-wfc5 https://github.com/OpenC3/cosmos/security/advisories/GHSA-v529-vhwc-wfc5

Exploits

https://github.com/OpenC3/cosmos/security/advisories/GHSA-v529-vhwc-wfc5 https://github.com/OpenC3/cosmos/security/advisories/GHSA-v529-vhwc-wfc5

Other References

https://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3

Frequently Asked Questions

What is CVE-2026-42087? +

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. It has a CVSS v3.1 base score of 9.6 (CRITICAL).

How severe is CVE-2026-42087? +

CVE-2026-42087 has a CVSS v3.1 score of 9.6 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0003, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-42087? +

CVE-2026-42087 affects products from openc3, specifically: cosmos. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-42087? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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