{"vulnerability": "cve-2026-4578", "sightings": [{"uuid": "4f594b30-69d8-42d0-bb13-8386dd382365", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-4578", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mhpmbpdulu2e", "content": "", "creation_timestamp": "2026-03-23T08:09:55.505346Z"}, {"uuid": "44be267a-76fb-4f02-9bdb-20f1905e4c2a", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-45781", "type": "published-proof-of-concept", "source": "https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-2v5f-5r6w-p67r", "content": "", "creation_timestamp": "2026-05-12T21:41:52.000000Z"}, {"uuid": "c5ee6351-65b9-4824-acca-10cd88b90486", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-45781", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mluaol6rpr2o", "content": "CVE-2026-45781 - MCP Registry: OCI ownership validation fails open on upstream rate limits, allowing attacker-controlled package claims\nCVE ID : CVE-2026-45781\n \n Published : May 14, 2026, 9:16 p.m. | 2\u00a0hours, 17\u00a0minutes ago\n \n Description : The MCP Registry provides MCP clien...", "creation_timestamp": "2026-05-15T02:06:27.613758Z"}, {"uuid": "f782187e-e135-413a-b167-529f5ea34957", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-45783", "type": "published-proof-of-concept", "source": "https://github.com/libp2p/js-libp2p/security/advisories/GHSA-32mq-hpph-xfvr", "content": "", "creation_timestamp": "2026-05-13T02:15:12.000000Z"}, {"uuid": "669966b7-6af0-40e4-bee6-70335f4865a4", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-45785", "type": "published-proof-of-concept", "source": "https://github.com/openmcdf/openmcdf/security/advisories/GHSA-5qwm-7pvp-w988", "content": "", "creation_timestamp": "2026-05-14T03:12:49.000000Z"}]}