Hermes WebUI < 0.51.358 Unauthenticated Password Takeover via /api/settings_CVE-2026-49973

{
    "lastseen": "",
    "description": "Hermes WebUI before version 0.51.358 contains an improper access control vulnerability that allows unauthenticated remote attackers to hijack initial setup by submitting the _set_password parameter to the settings API endpoint without any network origin restriction. Attackers on any reachable network can send a POST request to the settings endpoint during the first-run setup window to persist an arbitrary password hash, obtain a valid session cookie, and lock out the legitimate operator from their own instance.",
    "published": "2026-06-11T19:04:08.505Z",
    "modified": "2026-06-11T19:04:08.505Z",
    "type": "cve",
    "title": "Hermes WebUI < 0.51.358 Unauthenticated Password Takeover via /api/settings",
    "source": "VulnCheck",
    "references": "https://github.com/nesquena/hermes-webui/releases/tag/v0.51.358\nhttps://github.com/nesquena/hermes-webui/pull/3964\nhttps://github.com/nesquena/hermes-webui/pull/3973\nhttps://github.com/nesquena/hermes-webui/commit/1126e541325d401538f6a272a9c024c37d47ae08\nhttps://www.vulncheck.com/advisories/hermes-webui-unauthenticated-password-takeover-via-api-settings",
    "id": "CVE-2026-49973",
    "bulletinFamily": "",
    "cwe": [
        "CWE-306"
    ],
    "cvelist": null,
    "sourceData": "nesquena hermes-webui 0",
    "sourceHref": "",
    "cvss": {
        "score": 9.2,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "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": "hermes-webui",
    "version": "0",
    "vendor": "nesquena",
    "ai_description": "Unauthenticated password takeover vulnerability via /api/settings",
    "ai_severity": "Critical",
    "ai_vendor": "nesquena",
    "ai_product": "Hermes WebUI",
    "ai_version": "< 0.51.358",
    "ai_score": 9.2
}