{"metadata": {"vulnerability": "CVE-2026-128337", "count": 9, "kinds": {"milestone": 3, "sighting": 1, "kev": 0, "other": 5}, "linked_omitted": 0}, "data": [{"timestamp": "2026-10-16T00:00:00Z", "date_only": false, "value": "2026-10-16T00:00:00.000Z", "kind": "other", "label": "Made public", "source": "cvelistv5 / VulnCheck", "record": "CVE-2026-128337", "field": "containers.cna.datePublic", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-11-13T01:20:39.850Z", "date_only": false, "value": "2026-11-13T01:20:39.850Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-128337", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-11-13T09:33:37.679Z", "date_only": false, "value": "2026-11-13T09:33:37.679Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-128337", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-11-13T09:33:37.679Z", "date_only": false, "value": "2026-11-13T09:33:37.679Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2026-128337", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-11-13T09:33:37.679Z", "date_only": false, "value": "2026-11-13T09:33:37.679Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / VulnCheck", "record": "CVE-2026-128337", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-11-13T10:18:13Z", "date_only": false, "value": "2026-11-13T10:18:13Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-2VGM-9QPX-XWQX", "record": "GHSA-2VGM-9QPX-XWQX", "field": "database_specific.nvd_published_at", "linked_record": true}, {"timestamp": "2026-11-13T10:32:40.585Z", "date_only": false, "value": "2026-11-13T10:32:40.585358Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117608674760869548", "record": "CVE-2026-128337", "field": "creation_timestamp", "uuid": "d71539e0-50bf-4c74-8625-6d6636c3259a", "content": "CVE-2026-128337 ExcelJS through 4.4.0 Prototype Pollution via x14 Conditional Formatting Rule ID ExcelJS through 4.4.0 contains a prototype pollution vulnerability in mergeConditionalFormattings that allows attackers to modify Object.prototype by supplying an x14:cfRule id of __proto__. Attackers can craft an xlsx file that, when loaded with xlsx.load(), sets properties such as type, direction, border and cfvo on every object in the process until it restarts.\nhttps://www.cve.org/CVERecord?id=CVE-2026-128337https://github.com/exceljs/exceljshttps://github.com/mateocallec/exceljs-hardened/security/advisories/GHSA-86ch-m4gp-r5xfhttps://github.com/exceljs/exceljs/blob/v4.4.0/lib/xlsx/xform/sheet/worksheet-xform.js#L34-L42https://github.com/exceljs/exceljs/blob/v4.4.0/lib/xlsx/xform/sheet/worksheet-xform.js#L55-L74https://www.vulncheck.com/advisories/exceljs-through-4.4.0-prototype-pollution-via-x14-conditional-formatting-rule-id#exceljs#CVE_2026_128337#bot", "url": "https://infosec.exchange/users/cve/statuses/117608674760869548"}, {"timestamp": "2026-11-13T12:31:43Z", "date_only": false, "value": "2026-11-13T12:31:43Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-2VGM-9QPX-XWQX", "record": "GHSA-2VGM-9QPX-XWQX", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-11-13T12:31:43Z", "date_only": false, "value": "2026-11-13T12:31:43Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-2VGM-9QPX-XWQX", "record": "GHSA-2VGM-9QPX-XWQX", "field": "modified", "linked_record": true}], "metrics": {"as_of": "2026-11-13T14:45:09.673Z", "anchors": {"origin": {"timestamp": "2026-10-16T00:00:00Z", "date_only": false, "value": "2026-10-16T00:00:00.000Z", "kind": "other", "label": "Made public", "source": "cvelistv5 / VulnCheck", "record": "CVE-2026-128337", "field": "containers.cna.datePublic", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "discovery": null, "report": null, "acknowledgement": null, "disclosure": {"timestamp": "2026-10-16T00:00:00Z", "date_only": false, "value": "2026-10-16T00:00:00.000Z", "kind": "other", "label": "Made public", "source": "cvelistv5 / VulnCheck", "record": "CVE-2026-128337", "field": "containers.cna.datePublic", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "exploit_publication": null, "exploitation": null, "patch": null}, "vendor_response_time": {"available": false, "missing": ["start", "end"]}, "time_to_exploit": {"available": false, "missing": ["end"]}, "disclosure_to_exploit": {"available": false, "missing": ["end"]}, "disclosure_to_exploit_publication": {"available": false, "missing": ["end"]}, "time_to_patch": {"available": false, "missing": ["start", "end"]}, "total_time_to_patch": {"available": false, "missing": ["start", "end"]}, "disclosure_to_patch": {"available": false, "missing": ["end"]}, "time_unpatched": {"available": true, "seconds": 2472309.673177, "hours": 686.7526869936112, "days": 28.614695291400466, "min_seconds": 2385909.673177, "max_seconds": 2472309.673177, "approximate": true, "ongoing": true, "order_known": true, "batch_listing": false, "end_before_start": false, "start": {"timestamp": "2026-10-16T00:00:00Z", "date_only": false, "value": "2026-10-16T00:00:00.000Z", "kind": "other", "label": "Made public", "source": "cvelistv5 / VulnCheck", "record": "CVE-2026-128337", "field": "containers.cna.datePublic", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "end": {"timestamp": "2026-11-13T14:45:09.673Z", "date_only": false, "label": "As of", "source": "Calculation clock"}}, "exploitation_to_patch": {"available": false, "missing": ["start"]}, "exploit_publication_to_patch": {"available": false, "missing": ["start"]}}}