{"items":[{"id":"NVI-00008937","kind":"vulnerability","title":"excel-mcp-server has a Path Traversal issue","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-j98m-w3xp-9f56","CVE-2026-40576"],"plain_summary":"GitHub lists this reviewed advisory for excel-mcp-server. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-110d702376ae0cb1cf0a0c35a4d57bbd"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-27T16:28:51.000Z","value":"9.4 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3df64c23b029c25f8d9adeff9d7c4747"},{"kind":"CVSS","as_of":"2026-10-26T21:10:00.170Z","value":"9.4 CRITICAL (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-2398b3930a97c07ba8febc5903dcac3e"},{"kind":"CVSS","as_of":"2026-10-26T21:10:00.170Z","value":"9.4 CRITICAL (3.1)","meaning":"134c704f-9b21-4f2e-91b3-4a467353bcc0 severity; no combined Null risk score.","source_id":"sr-2398b3930a97c07ba8febc5903dcac3e"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.465%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.40279. Missing scores are unknown.","source_id":"sr-110d702376ae0cb1cf0a0c35a4d57bbd"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-3df64c23b029c25f8d9adeff9d7c4747","url":"https://github.com/advisories/GHSA-j98m-w3xp-9f56","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-j98m-w3xp-9f56","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:56:51.534Z"},{"id":"sr-2398b3930a97c07ba8febc5903dcac3e","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40576","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-40576","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T22:34:58.689Z"},{"id":"sr-110d702376ae0cb1cf0a0c35a4d57bbd","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-40576","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.378Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3df64c23b029c25f8d9adeff9d7c4747"],"technology":"excel-mcp-server","known_exclusions":[],"conditions_summary":"## Summary\n\nA path traversal vulnerability exists in `excel-mcp-server` versions up to and including `0.1.7`. When running in SSE or Streamable-HTTP transport mode (the documented way to use this server remotely), an unauthenticated attacker on the network can read, write, and overwrite arbitrary files on the host filesystem by supplying crafted `filepath` arguments to any of the 25 exposed MCP tool handlers.\n\nThe server is intended to confine file operations to a directory set by the `EXCEL_FILES_PATH` environment variable. The function responsible for enforcing this boundary — `get_excel_path()` — fails to do so due to two independent flaws: it passes absolute paths through without any check, and it joins relative paths without resolving or validating the result. Combined with zero authentication on the default network-facing transport and a default bind address of `0.0.0.0` (all interfaces), this allows trivial remote exploitation.\n\n---\n\n## Details\n\n| Field | Value |\n|-------|-------|\n| **Package** | `excel-mcp-server` (PyPI) |\n| **Repository** | https://github.com/haris-musa/excel-mc","public_affected_ranges":["<= 0.1.7"]}],"null_published_at":"2026-11-04T10:04:35.920Z","source_updated_at":"2026-10-27T16:28:51.000Z","source_disclosed_at":"2026-04-14T00:03:17.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:56:51.534Z"},{"id":"NVI-00008937","kind":"vulnerability","title":"excel-mcp-server has a Path Traversal issue","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-j98m-w3xp-9f56","CVE-2026-40576"],"plain_summary":"GitHub lists this reviewed advisory for excel-mcp-server. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-110d702376ae0cb1cf0a0c35a4d57bbd"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-27T16:28:51.000Z","value":"9.4 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3df64c23b029c25f8d9adeff9d7c4747"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.465%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.40279. Missing scores are unknown.","source_id":"sr-110d702376ae0cb1cf0a0c35a4d57bbd"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-3df64c23b029c25f8d9adeff9d7c4747","url":"https://github.com/advisories/GHSA-j98m-w3xp-9f56","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-j98m-w3xp-9f56","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:56:51.534Z"},{"id":"sr-110d702376ae0cb1cf0a0c35a4d57bbd","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-40576","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.378Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3df64c23b029c25f8d9adeff9d7c4747"],"technology":"excel-mcp-server","known_exclusions":[],"conditions_summary":"## Summary\n\nA path traversal vulnerability exists in `excel-mcp-server` versions up to and including `0.1.7`. When running in SSE or Streamable-HTTP transport mode (the documented way to use this server remotely), an unauthenticated attacker on the network can read, write, and overwrite arbitrary files on the host filesystem by supplying crafted `filepath` arguments to any of the 25 exposed MCP tool handlers.\n\nThe server is intended to confine file operations to a directory set by the `EXCEL_FILES_PATH` environment variable. The function responsible for enforcing this boundary — `get_excel_path()` — fails to do so due to two independent flaws: it passes absolute paths through without any check, and it joins relative paths without resolving or validating the result. Combined with zero authentication on the default network-facing transport and a default bind address of `0.0.0.0` (all interfaces), this allows trivial remote exploitation.\n\n---\n\n## Details\n\n| Field | Value |\n|-------|-------|\n| **Package** | `excel-mcp-server` (PyPI) |\n| **Repository** | https://github.com/haris-musa/excel-mc","public_affected_ranges":["<= 0.1.7"]}],"null_published_at":"2026-10-31T22:13:48.407Z","source_updated_at":"2026-10-27T16:28:51.000Z","source_disclosed_at":"2026-04-14T00:03:17.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:56:51.534Z"}],"next_cursor":null,"snapshot_revision":"42594"}