{"id":"CVE-2026-57496","published":"2026-10-15T19:17:41.733","lastModified":"2026-10-16T20:04:29.760","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.","cvssScore":9.6,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","cwes":["CWE-22"],"vendors":[],"products":[],"references":[{"url":"https://github.com/Labs64/NetLicensing-MCP/commit/b8fd0ea76d533202573eb24add9fb2fbd9331496","tags":[]},{"url":"https://github.com/Labs64/NetLicensing-MCP/pull/6","tags":[]},{"url":"https://github.com/Labs64/NetLicensing-MCP/releases/tag/0.1.8","tags":[]},{"url":"https://github.com/Labs64/NetLicensing-MCP/security/advisories/GHSA-hxpf-9xvq-wph8","tags":[]}],"exploitRefs":[{"url":"https://github.com/Labs64/NetLicensing-MCP/commit/b8fd0ea76d533202573eb24add9fb2fbd9331496","tags":[]},{"url":"https://github.com/Labs64/NetLicensing-MCP/pull/6","tags":[]},{"url":"https://github.com/Labs64/NetLicensing-MCP/releases/tag/0.1.8","tags":[]},{"url":"https://github.com/Labs64/NetLicensing-MCP/security/advisories/GHSA-hxpf-9xvq-wph8","tags":[]}],"hasPoc":true,"ai":{"summary":"A path traversal vulnerability in NetLicensing MCP Server allows authenticated users to bypass token redaction protections and access plaintext API keys and shop URLs. This enables attackers to escalate privileges and gain broad read/write/delete access to the NetLicensing account.","exploitability":"Exploitation requires an authenticated MCP client with a non-administrative API key, making it moderately difficult but not complex to achieve in practice.","blast_radius":"The vulnerability could lead to widespread compromise of software licensing infrastructure, potentially exposing sensitive API keys and shop URLs across multiple applications using NetLicensing.","remediation":"Upgrade to version 0.1.8 or later to address the path traversal vulnerability in netlicensing_get_product.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["path-traversal","api","privilege-escalation","token-exfiltration"],"model":"garnet-coder","analyzedAt":"2026-10-16T08:47:43.120Z"}}