OpenC3 COSMOS: Hijacked session token can be used to reset password for persistence_CVE-2026-42084

{
    "lastseen": "",
    "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.",
    "published": "2026-05-04T17:11:31.853Z",
    "modified": "2026-05-04T17:11:31.853Z",
    "type": "cve",
    "title": "OpenC3 COSMOS: Hijacked session token can be used to reset password for persistence",
    "source": "GitHub_M",
    "references": "https://github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7\nhttps://github.com/OpenC3/cosmos/commit/2e623714e3426d5ae81b6f8239d4a2a6937ef776\nhttps://github.com/OpenC3/cosmos/releases/tag/v6.10.5\nhttps://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3",
    "id": "CVE-2026-42084",
    "bulletinFamily": "",
    "cwe": [
        "CWE-620"
    ],
    "cvelist": null,
    "sourceData": "OpenC3 cosmos < 6.10.5\nOpenC3 cosmos >= 7.0.0.pre.rc1, < 7.0.0-rc3",
    "sourceHref": "",
    "cvss": {
        "score": 8.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "cosmos",
    "version": "< 6.10.5",
    "vendor": "OpenC3",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}