CVE-2026-77602

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Source
https://cve.org/CVERecord?id=CVE-2026-77602
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-77602.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-77602
Aliases
Published
2026-09-23T18:56:16Z
Modified
2026-09-24T03:47:02Z
Severity
  • 9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
OpenC3 COSMOS: Authenticated remote code execution via the user-writable config overlay (table definitions, cmd/tlm definitions, and script suites)
Details

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From 5.1.0 until 7.3.0, authenticated non-administrator users can write content under targets_modified/ that is later executed by multiple configuration paths below the intended code-execution privilege tier. Table and command or telemetry definitions are processed through ConfigParser, PacketConfig, GENERIC_READ_CONVERSION, or GENERIC_WRITE_CONVERSION, allowing ERB rendering or Ruby and Python evaluation, while openc3-cosmos-script-runner-api/scripts/run_suite_analysis.rb executes suite procedure files through require. Storage uploads, screen saves, and script creation can place content in the overlay, and triggering table processing, a cmd/tlm reload, or suite analysis executes the content in cmd-tlm-api, decom microservices, or Script Runner with access to internal credentials and data. This issue is fixed in version 7.3.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-94"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77602.json"
}
References

Affected packages

Git / github.com/openc3/cosmos

Affected ranges

Type
GIT
Repo
https://github.com/openc3/cosmos
Events
Introduced
b39e7b7031bcf5830b9c1ec8dc8f52508bfc17ef
Fixed
92f8c99cc8ed704d2cf747832f09b72d64b6fa65
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "5.1.0"
        },
        {
            "fixed":  "7.3.0"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v5.*
v5.1.0
v5.1.1
v5.10.0
v5.10.1
v5.11.0
v5.11.1
v5.11.2
v5.11.3
v5.12.0
v5.13.0
v5.14.0
v5.14.1
v5.14.2
v5.15.0
v5.15.1
v5.15.2
v5.16.0
v5.16.1
v5.16.2
v5.17.0
v5.17.1
v5.18.0
v5.19.0
v5.2.0
v5.20.0
v5.3.0
v5.4.0
v5.4.1
v5.4.2
v5.4.3-beta0
v5.5.0
v5.5.0-beta0
v5.5.1
v5.5.2
v5.5.2-beta0
v5.6.0
v5.6.1
v5.7.0
v5.7.2
v5.8.0
v5.8.1
v5.9.0
v5.9.1
v6.*
v6.0.0
v6.0.1
v6.0.2
v6.1.0
v6.10.0
v6.10.1
v6.10.2
v6.10.3
v6.10.4
v6.2.0
v6.2.1
v6.3.0
v6.4.0
v6.4.1
v6.4.2
v6.5.0
v6.5.1
v6.6.0
v6.7.0
v6.8.1
v6.9.0
v6.9.1
v6.9.2
v7.*
v7.0.0
v7.0.0-rc1
v7.0.0-rc2
v7.0.0-rc3
v7.0.1
v7.1.0
v7.1.1
v7.2.0
v7.2.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-77602.json"