{"data":{"id":"c68505df-b43a-46fe-8830-a36c93cc2f62","title":"My Credentials, Please: Detecting Filesystem Capability Laundering in MCP Servers at Scale","summary":"Researchers studied filesystem capability laundering in MCP servers, where attacker-steered arguments make a tool read sensitive host files outside its declared contract. Their MCP-FSD tool scanned 21,097 servers from nine registries and found 787 of 4,806 triaged servers (16.4%) with filesystem capabilities despite non-filesystem classifications. Dynamic validation confirmed 150 vulnerable instances under tested sandbox policies, and coordinated disclosure produced 13 security advisories, including two CVEs in Anthropic's Git MCP Server.","solution":"N/A -- no mitigation discussed in source.","labels":["security","research"],"sourceUrl":"https://arxiv.org/abs/2610.22301v1","publishedAt":"2026-10-15T17:48:10.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":["other"],"issueType":"research","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":["Anthropic"],"affectedVendorsRaw":["MCP servers","Model Context Protocol","Anthropic Git MCP Server"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"epssCheckedAt":null,"kevDateAdded":null,"advisoryAliases":null,"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":null,"disclosureDate":"2026-10-15T17:48:10.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["confidentiality"],"aiComponentTargeted":"plugin","llmSpecific":true,"classifierConfidence":0.9,"researchCategory":"preprint","atlasIds":null}}