{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-18482", "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b", "state": "PUBLISHED", "assignerShortName": "certcc", "dateReserved": "2026-07-31T12:46:16.513Z", "datePublished": "2026-08-20T12:36:40.567Z", "dateUpdated": "2026-08-20T19:16:46.108Z"}, "containers": {"cna": {"title": "CVE-2026-18482", "descriptions": [{"lang": "en", "value": "Neo.mjs contains a command injection vulnerability within the FileSystemService.mjs component of the ai/mcp/server/file-system MCP server, where the checkSyntax() and runPlaywrightTest() functions unsafely interpolate caller-controlled absolutePath values into shell commands, enabling arbitrary OS command execution when an AI agent is induced to invoke these tools. Commit 88c77fc fixes these vulnerabilities."}], "source": {"discovery": "UNKNOWN"}, "affected": [{"vendor": "Klarso GmbH", "product": "neo-mjs", "versions": [{"status": "affected", "version": "0", "lessThan": "88c77fc4", "versionType": "custom"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')"}]}], "references": [{"url": "https://github.com/neomjs/neo/commit/5acc564ea1b278bca5fab1f8f397a6ba9b849d75"}, {"url": "https://github.com/neomjs/neo/commit/88c77fc4"}, {"url": "https://novice-22.com/posts/neo-mjs/"}], "x_generator": {"engine": "VINCE 3.0.44", "env": "prod", "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-18482"}, "providerMetadata": {"orgId": "37e5125f-f79b-445b-8fad-9564f167944b", "shortName": "certcc", "dateUpdated": "2026-08-20T19:16:46.108Z"}}}}

{}

{"affected": [{"affectedData": [{"product": "neo-mjs", "vendor": "Klarso GmbH", "versions": [{"lessThan": "88c77fc4", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "cret@cert.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Neo.mjs contains a command injection vulnerability within the FileSystemService.mjs component of the ai/mcp/server/file-system MCP server, where the checkSyntax() and runPlaywrightTest() functions unsafely interpolate caller-controlled absolutePath values into shell commands, enabling arbitrary OS command execution when an AI agent is induced to invoke these tools. Commit 88c77fc fixes these vulnerabilities."}], "id": "CVE-2026-18482", "lastModified": "2026-08-20T20:17:33.800", "metrics": {}, "published": "2026-08-20T13:16:58.560", "references": [{"source": "cret@cert.org", "url": "https://github.com/neomjs/neo/commit/5acc564ea1b278bca5fab1f8f397a6ba9b849d75"}, {"source": "cret@cert.org", "url": "https://github.com/neomjs/neo/commit/88c77fc4"}, {"source": "cret@cert.org", "url": "https://novice-22.com/posts/neo-mjs/"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,88c77fc4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "neo-mjs", "source": "cna", "vendor": "Klarso GmbH"}, "product": "neo-mjs", "vendor": "klarso_gmbh"}], "created": "2026-08-20T22:30:05.970170+00:00", "title": "Command Injection in Neo.mjs FileSystemService Leading to Arbitrary OS Command Execution", "updated": "2026-08-21T12:09:25.965619+00:00", "vendors": ["klarso_gmbh", "klarso_gmbh$PRODUCT$neo-mjs"], "weaknesses": ["CWE-78"]}