{"metadata": {"vulnerability": "CVE-2026-6556", "count": 12, "kinds": {"milestone": 3, "sighting": 3, "kev": 0, "other": 6}}, "data": [{"timestamp": "2026-04-18T09:00:13.828Z", "date_only": false, "value": "2026-04-18T09:00:13.828Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-6556", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-06-30T12:48:41.474Z", "date_only": false, "value": "2026-06-30T12:48:41.474Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-6556", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-06-30T12:48:41.474Z", "date_only": false, "value": "2026-06-30T12:48:41.474Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / openjs", "record": "CVE-2026-6556", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-06-30T12:54:39.102Z", "date_only": false, "value": "2026-06-30T12:54:39.102809Z", "kind": "sighting", "label": "Seen", "source": "https://bsky.app/profile/ulisesgascon.com/post/3mpj2dxzyik2z", "record": "CVE-2026-6556", "field": "creation_timestamp", "uuid": "1ae54cb7-3a3e-4b8d-98f8-f4ad088b9798", "content": "\ud83d\udea8 Critical-severity security fix in @fastify/express 4.0.7 just released!\n\nPatches CVE-2026-6556. @fastify/express vulnerable to middleware bypass via non-string mount paths in prefixed plugins.\n\ngithub.com/fastify/fast...", "url": "https://bsky.app/profile/ulisesgascon.com/post/3mpj2dxzyik2z"}, {"timestamp": "2026-06-30T13:19:25.467Z", "date_only": false, "value": "2026-06-30T13:19:25.467", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-6556", "record": "FKIE_CVE-2026-6556", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-06-30T13:30:22.928Z", "date_only": false, "value": "2026-06-30T13:30:22.928078Z", "kind": "other", "label": "Recorded", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-6556", "field": "containers.adp.0.metrics.0.other.content.timestamp"}, {"timestamp": "2026-06-30T13:30:22.928Z", "date_only": false, "value": "2026-06-30T13:30:22.928078Z", "kind": "other", "label": "Recorded", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-6556", "record": "FKIE_CVE-2026-6556", "field": "metrics.ssvcV203.0.ssvcData.timestamp"}, {"timestamp": "2026-06-30T13:30:34.905Z", "date_only": false, "value": "2026-06-30T13:30:34.905Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2026-6556", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-06-30T13:30:34.905Z", "date_only": false, "value": "2026-06-30T13:30:34.905Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-6556", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2026-06-30T14:01:37.682Z", "date_only": false, "value": "2026-06-30T14:01:37.682197Z", "kind": "sighting", "label": "Seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mpj63qsdtd2f", "record": "CVE-2026-6556", "field": "creation_timestamp", "uuid": "0cc9b47e-e173-4fcf-9101-d02616e04944", "content": "CVE-2026-6556 - @fastify/express vulnerable to middleware bypass via non-string mount paths in prefixed plugins\nCVE ID : CVE-2026-6556\n \n Published : June 30, 2026, 12:48 p.m. | 57\u00a0minutes ago\n \n Description : @fastify/express versions 4.0.6 and earlier only rewrite the plugin...", "url": "https://bsky.app/profile/cve.skyfleet.blue/post/3mpj63qsdtd2f"}, {"timestamp": "2026-07-01T15:57:54.630Z", "date_only": false, "value": "2026-07-01T15:57:54.630", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-6556", "record": "FKIE_CVE-2026-6556", "field": "lastModified"}, {"timestamp": "2026-07-02T06:37:07.091Z", "date_only": false, "value": "2026-07-02T06:37:07.091058Z", "kind": "sighting", "label": "Seen", "source": "https://bsky.app/profile/cyberhub.blog/post/3mpng6qcv642i", "record": "CVE-2026-6556", "field": "creation_timestamp", "uuid": "a653249a-1657-4512-a0ad-5bd88dfdeea5", "content": "\ud83d\udccc CVE-2026-6556 - @fastify/express versions 4.0.6 and earlier only rewrite the plugin prefix for middleware mount paths when the path argument is a string. 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