FKIE_CVE-2026-42084

Vulnerability from fkie_nvd - Published: 2026-05-04 18:16 - Updated: 2026-05-08 19:54
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Summary
OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to versions 6.10.5 and 7.0.0-rc3, the OpenC3 password change functionality allows a user to change their password without providing the old password, by accepting a valid session token instead. In assumed breach scenarios, this behaviour can be exploited by an attacker who has already obtained a valid session token, to gain persistence in hijacked account (including admin) and prevent legitimate users from accessing the account. This issue has been patched in versions 6.10.5 and 7.0.0-rc3.
References
security-advisories@github.comhttps://github.com/OpenC3/cosmos/commit/2e623714e3426d5ae81b6f8239d4a2a6937ef776Patch
security-advisories@github.comhttps://github.com/OpenC3/cosmos/releases/tag/v6.10.5Release Notes
security-advisories@github.comhttps://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3Release Notes
security-advisories@github.comhttps://github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7Exploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7Exploit, Vendor Advisory
Impacted products
Vendor Product Version
openc3 cosmos *
openc3 cosmos 7.0.0
openc3 cosmos 7.0.0
To clipboard 

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      "nodes": [
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    }
  ],
  "id": "CVE-2026-42084",
  "lastModified": "2026-05-08T19:54:14.983",
  "metrics": {
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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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