Empty API_TOKEN disables authentication on network-reachable HTTP/SSE transport_CVE-2026-44830

{
    "lastseen": "",
    "description": "Nocturne Memory is a lightweight, rollbackable, and visual Long-Term Memory Server for MCP Agents. Prior to 2.4.1, when API_TOKEN is unset or empty, the BearerTokenAuthMiddleware bypasses authentication for all HTTP requests. Combined with the default 0.0.0.0 host binding and CORS allow_origins=[\"*\"], operators following the Docker setup without explicitly setting API_TOKEN expose the full Knowledge-Graph read/write API to any LAN-reachable client. An attacker on the same network can read, write, or delete all memory entries \u2014 including system://boot and core://* URIs that auto-load into downstream agent sessions, enabling persistent prompt-injection. This vulnerability is fixed in 2.4.1.",
    "published": "2026-05-27T14:19:55.126Z",
    "modified": "2026-05-27T15:33:42.680Z",
    "type": "cve",
    "title": "Empty API_TOKEN disables authentication on network-reachable HTTP/SSE transport",
    "source": "GitHub_M",
    "references": "https://github.com/Dataojitori/nocturne_memory/security/advisories/GHSA-crr4-xrj9-ww8g",
    "id": "CVE-2026-44830",
    "bulletinFamily": "",
    "cwe": [
        "CWE-306"
    ],
    "cvelist": null,
    "sourceData": "Dataojitori nocturne_memory < 2.4.1",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "nocturne_memory",
    "version": "< 2.4.1",
    "vendor": "Dataojitori",
    "ai_description": "Authentication bypass vulnerability in Nocturne Memory due to empty API_TOKEN, allowing unauthorized access to the Knowledge-Graph read/write API",
    "ai_severity": "High",
    "ai_vendor": "Dataojitori",
    "ai_product": "Nocturne Memory",
    "ai_version": "< 2.4.1",
    "ai_score": 8.7
}