{"schema":"threatline.record/2","record":{"id":"CVE-2026-108953","aliases":[],"summary":"mac-shell-mcp before 2.0.0 OS Command Injection via execute_command Arguments","details":"mac-shell-mcp before 2.0.0 contains an OS command injection vulnerability that allows MCP clients to bypass the command whitelist by injecting shell metacharacters into execute_command arguments. Attackers or malicious prompts can call a safe command such as pwd with arguments like ';' to run forbidden commands as the server user without approval.","categories":["Unclassified"],"product":"mac-shell-mcp","vendor":"cfdude","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-108953","source_modified_at":"2026-10-13T16:58:27.456Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"mac-shell-mcp","vendor":"cfdude","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"2.0.0"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-108953","source_modified_at":"2026-10-13T16:58:27.456Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"mac-shell-mcp","ecosystem":null},"version":"2.0.0","basis":"first unaffected version stated in the CVE record"}],"cvss":8.5,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00749,"percentile":0.54452,"score_date":"2026-10-23"},"published_at":"2026-10-12T12:13:05.422Z","modified_at":"2026-10-13T16:58:27.456Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-108953","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-13T16:58:27.456Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-108953","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/cfdude/mac-shell-mcp/issues/45","tags":["issue-tracking"]},{"source":"CVE List","url":"https://github.com/cfdude/mac-shell-mcp/commit/932ce733cde07bb30b1f186303e6692dbb5d087a","tags":["patch"]},{"source":"CVE List","url":"https://github.com/cfdude/mac-shell-mcp/blob/1c1708201abb7a18c83075e1bf933e7a92cbeb9f/src/services/command-service.ts#L257-L340","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/cfdude/mac-shell-mcp","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/mac-shell-mcp-before-2.0.0-os-command-injection-via-execute-command-arguments","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-13T16:40:52.381818Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-13T16:58:27.456Z","content_hash":"52599fa8bf6803d18e87e0af70962e8d54dfb111b4177e9ae2108baa91027b2a"}}