Description
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.
Affected products
openc3: cosmos
References5
- github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7 ExploitVendor Advisory
- github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7 ExploitVendor Advisory
- github.com/OpenC3/cosmos/commit/2e623714e3426d5ae81b6f8239d4a2a… Patch
- github.com/OpenC3/cosmos/releases/tag/v6.10.5 Release Notes
- github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3 Release Notes
Metrics
- CVSS 3.1
-
8.1
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - EPSS — exploit probability
- 0% percentile: 24 · as of 13 November 2026
- CWE
- CWE-620
Could this be exploited in your environment?
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