Vulnerability · Published May 4, 2026 · Assigned by GitHub_M

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

Critical 9.6

In plain English

A critical-severity SQL injection in cosmos from OpenC3. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.6Critical

Exploit odds (30 days)0.3%top 74.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	openc3	7.0.0	PYSEC-2026-2244
RubyGems	openc3	7.0.0-rc3	GHSA-v529-vhwc-wfc5

Affected products (as reported)

Vendor	Product	Versions
OpenC3	cosmos	>= 6.7.0, < 7.0.0-rc3

Weakness: CWE-89 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

References

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