PatchTheCVECVE-2026-42088: OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded
CVE-2026-42088 is a critical-severity flaw (CVSS 9.6) affecting cosmos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to version 7.0.0-rc3, the Script Runner widget allows users to execute Python and Ruby scripts directly from the openc3-COSMOS-script-runner-api container. Because all the docker containers share a network, users can execute specially crafted scripts to bypass the API permissions check and perform administrative actions, i
Why this priority
- Critical severity
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.6 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 73%) |
| CISA exploited list | No |
| Weakness | CWE-250 |
| Published | 2026-05-04 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-42088?
cosmos: upgrade to 7.0.0. Exact commands for each OS are on this page.
Is CVE-2026-42088 being exploited?
CVE-2026-42088 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-42088 affect?
CVE-2026-42088 affects cosmos. Severity is critical (CVSS 9.6). OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to version 7.0.0-rc3, the Script Runner widget allows users to execute Python and Ruby scripts directly from the o
How urgent is CVE-2026-42088?
Priority 45/100. Critical severity; Public exploit reference
Software pages
Python vulnerabilities · Docker vulnerabilities · Ruby vulnerabilities
Related CVEs
- CVE-2026-42087 CRITICAL 9.6 UPGRADE OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded
- CVE-2026-42084 HIGH 8.1 UPGRADE OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded
- CVE-2026-42085 MEDIUM 4.3 UPGRADE OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded
- CVE-2026-42086 MEDIUM 4.6 UPGRADE OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded