{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:B34F6NKGYYY5HYAW5BT7OQOB2W","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"2312a941bd178326e1c62db56042f7f245ad013d4e56dedd0957664792dd881f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-06-19T11:35:41Z","title_canon_sha256":"cf0e632da22703b49bf1c07f89ec97ef6bc5e6b4ff84d37f6bb88ba641c05d60"},"schema_version":"1.0","source":{"id":"2606.21338","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.21338","created_at":"2026-06-23T01:12:37Z"},{"alias_kind":"arxiv_version","alias_value":"2606.21338v1","created_at":"2026-06-23T01:12:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.21338","created_at":"2026-06-23T01:12:37Z"},{"alias_kind":"pith_short_12","alias_value":"B34F6NKGYYY5","created_at":"2026-06-23T01:12:37Z"},{"alias_kind":"pith_short_16","alias_value":"B34F6NKGYYY5HYAW","created_at":"2026-06-23T01:12:37Z"},{"alias_kind":"pith_short_8","alias_value":"B34F6NKG","created_at":"2026-06-23T01:12:37Z"}],"graph_snapshots":[{"event_id":"sha256:c1b1f0ee8ba816bd9ce9879134880dad76086435690fa1ac8b77b7a77045537c","target":"graph","created_at":"2026-06-23T01:12:37Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2606.21338/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Model Context Protocol (MCP) has rapidly become the de facto standard for connecting large language models (LLMs) to external resources, but it also introduces a class of privacy risks that existing tools are ill-equipped to detect. Unlike conventional exfiltration bugs, leakage in MCP servers is largely protocol-induced: credentials, API keys, and Personally Identifiable Information (PII) cross the local/LLM boundary simply by being returned, logged, or raised inside a tool handler, with no explicit outbound request in the source code. We present MCPPrivacyDetector, a context-aware cross-","authors_text":"Biwei Yan, Boyang Ma, Jingku Li, Minghui Xu, Xuelong Dai, Yijun Yang, Yue Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-06-19T11:35:41Z","title":"\"What Happens Locally, Leaks Globally\": Detecting Privacy Leakage Risks in MCP Servers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.21338","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:8bc9c50ed9d0e864c9d51573d61ab185ef8adf40e0a9e27361d6f4a6fedcae84","target":"record","created_at":"2026-06-23T01:12:37Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"2312a941bd178326e1c62db56042f7f245ad013d4e56dedd0957664792dd881f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-06-19T11:35:41Z","title_canon_sha256":"cf0e632da22703b49bf1c07f89ec97ef6bc5e6b4ff84d37f6bb88ba641c05d60"},"schema_version":"1.0","source":{"id":"2606.21338","kind":"arxiv","version":1}},"canonical_sha256":"0ef85f3546c631d3e016e867f741c1d5a7a01666ea2069a2660481ff68ad85b0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ef85f3546c631d3e016e867f741c1d5a7a01666ea2069a2660481ff68ad85b0","first_computed_at":"2026-06-23T01:12:37.782792Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-23T01:12:37.782792Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q+dd0t7v3OyDdIf6Mnuy9sVHySe0i56Mz2maXEsvqJeYkX8nK5z4vyRF3DyaerLdGEDC1csGXIpT7p0nRye/Bg==","signature_status":"signed_v1","signed_at":"2026-06-23T01:12:37.783467Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.21338","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8bc9c50ed9d0e864c9d51573d61ab185ef8adf40e0a9e27361d6f4a6fedcae84","sha256:c1b1f0ee8ba816bd9ce9879134880dad76086435690fa1ac8b77b7a77045537c"],"state_sha256":"9e05b53b33797391bd58dc2fb3568b92f808fb2a19cd3de8daa6593ac58cb4a3"}