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CVE-2026-42086

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, the Command Sender UI uses an unsafe eval() function on array-like command parameters, which allows a user-supplied payload to execute in the browser when sending a command. This creates a self-XSS risk because an attacker can trigger their own script execution in the victim’s session, if allowed to influence the array parameter input, for example via ph
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ca1d222e686a6cfdad9b9c9c764b7b4f675d88438aeb35c5eced98244f9dc585
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"cosmos","vendor":"OpenC3","versions":[{"status":"affected","version":"< 7.0.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3cd133e2345ae998272aba0512d8f8005a305a297f1a101855b5b6501c3be1b5 · sha256:1bcdbaaceca79d94… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.6,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3cd133e2345ae998272aba0512d8f8005a305a297f1a101855b5b6501c3be1b5 · sha256:1bcdbaaceca79d94… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3cd133e2345ae998272aba0512d8f8005a305a297f1a101855b5b6501c3be1b5 · sha256:1bcdbaaceca79d94… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/OpenC3/cosmos/security/advisories/GHSA-ffq5-qpvf-xq7x","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OpenC3/cosmos/security/advisories/GHSA-ffq5-qpvf-xq7x"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3cd133e2345ae998272aba0512d8f8005a305a297f1a101855b5b6501c3be1b5 · sha256:1bcdbaaceca79d94… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/OpenC3/cosmos/security/advisories/GHSA-ffq5-qpvf-xq7x"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3cd133e2345ae998272aba0512d8f8005a305a297f1a101855b5b6501c3be1b5 · sha256:1bcdbaaceca79d94… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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