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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.0.0,3.0.11)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.1.0,3.1.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "neko", "source": "cna", "vendor": "m1k1o"}, "product": "neko", "vendor": "m1k1o"}], "analysis": {"en": {"generated_at": "2026-04-21T15:32:14.883246+00:00", "value": {"mitigation_remediation": ["Apply the latest patch by upgrading Neko to version 3.0.11 or later, including 3.1.2 and beyond.", "If an immediate upgrade is not possible, limit the instance to trusted users only, enforce strong, unique passwords, and run the service only when necessary.", "Deploy the instance behind a reverse proxy with additional access controls, disable or tightly restrict access to the /api/profile endpoint, and monitor for unauthorized privilege changes or unexpected administrative actions."], "summary": {"action": "Urgent Patch", "impact": "Privilege Escalation"}, "threat_synthesis": {"affected_systems": "The affected product is Neko from m1k1o. Versions 3.0.0 through 3.0.10 and 3.1.0 through 3.1.1 are vulnerable. The issue has been patched in releases v3.0.11 and v3.1.2.", "description_and_impact": "Neko, a self-hosted virtual browser, has a flaw that lets any authenticated user gain full administrative control over the entire instance, including member management, room settings, broadcast control, and session termination. This gives the attacker complete compromise of the instance. The weakness is reflected in multiple CWE identifiers, such as unchecked input (CWE\u201120) and missing access control (CWE\u2011269, CWE\u2011284, CWE\u2011639, CWE\u2011862).", "risk_and_exploitability": "The CVSS score of 8.8 indicates a high severity vulnerability. The exploit requires only a legitimate authenticated session; an attacker who can log in can perform privileged operations via the web interface or API. Although no EPSS score is available and it is not listed in the CISA KEV catalog, the impact of a successful exploit is total administrative takeover of the instance. Because the vulnerability is driven by the attacker\u2019s credential, the attack vector is likely evaluated as authenticated. Typical environments that expose Neko to the public internet face a higher risk, especially if weak or shared passwords, or unrestricted reverse proxies, are present."}}}}, "created": "2026-04-21T15:37:55.178240+00:00", "updated": "2026-04-22T11:47:00.236357+00:00", "vendors": ["m1k1o", "m1k1o$PRODUCT$neko"]}