CVE-2026-42084

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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/OpenC3/cosmos/commit/2e623714e3426d5ae81b6f8239d4a2a6937ef776	Patch
https://github.com/OpenC3/cosmos/releases/tag/v6.10.5	Release Notes
https://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3	Release Notes
https://github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7	Exploit Vendor Advisory
https://github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:openc3:cosmos:::::open_source:::*
	cpe:2.3:a:openc3:cosmos:7.0.0:rc1:::open_source:::*
	cpe:2.3:a:openc3:cosmos:7.0.0:rc2:::open_source:::*

History

No history.

Information

Published : 2026-05-04 18:16

Updated : 2026-06-17 10:47

NVD link : CVE-2026-42084

Mitre link : CVE-2026-42084

CVE.ORG link : CVE-2026-42084

JSON object : View

Products Affected

openc3

cosmos

CWE

CWE-620

Unverified Password Change

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