{"id":"CVE-2026-57496","revision":"053a93d265714420a9db280fa29563f4","records":[{"revision":"053a93d265714420a9db280fa29563f4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-57496","aliases":[],"title":"NetLicensing MCP Server: REST Path Traversal Bypasses Token Redaction","description":"NetLicensing MCP Server is a natural-language interface that enables agentic applications to manage the software-licensing lifecycle in Labs64 NetLicensing. Prior to 0.1.8, netlicensing_get_product passes the caller-controlled product_number to src/netlicensing_mcp/tools/products.py, which interpolates it into a REST path consumed by nl_get() in src/netlicensing_mcp/client.py without path-segment validation. A traversal segment can be normalized from the intended product path to the /token endpoint, after which the response is serialized through _wrap_json instead of _wrap_json_token_read, bypassing redact_token_read() protections for APIKEY number and SHOP shopURL fields. An authenticated MCP client with a non-administrative API key can retrieve plaintext token values, and a recovered administrative token can provide broad read, write, and delete access to the NetLicensing account. This issue is fixed in version 0.1.8.","state":0,"publishedAt":"2026-10-15T18:40:16.558+00:00","modifiedAt":"2026-10-21T01:06:14.636+00:00","affected":[{"ecosystem":"Vendor product","name":"NetLicensing-MCP","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Labs64\",\n                    \"product\": \"NetLicensing-MCP\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.1.8\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","score":9.6,"severity":"CRITICAL"}],"references":["https://github.com/Labs64/NetLicensing-MCP/security/advisories/GHSA-hxpf-9xvq-wph8","https://github.com/Labs64/NetLicensing-MCP/pull/6","https://github.com/Labs64/NetLicensing-MCP/commit/b8fd0ea76d533202573eb24add9fb2fbd9331496","https://github.com/Labs64/NetLicensing-MCP/releases/tag/0.1.8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-57496","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-57496","identifiers":["CVE-2026-57496"]},"retained":false,"historicalAffected":[]}],"coverage":[]}