{"metadata": {"vulnerability": "CVE-2026-19867", "count": 13, "kinds": {"milestone": 4, "sighting": 1, "kev": 0, "other": 8}}, "data": [{"timestamp": "2026-08-14T10:56:08.014Z", "date_only": false, "value": "2026-08-14T10:56:08.014Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-19867", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-16T07:00:12.550Z", "date_only": false, "value": "2026-10-16T07:00:12.550Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-19867", "field": "cveMetadata.datePublished"}, {"timestamp": "2026-10-16T07:00:12.550Z", "date_only": false, "value": "2026-10-16T07:00:12.550Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / Mattermost", "record": "CVE-2026-19867", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-16T07:17:13Z", "date_only": false, "value": "2026-10-16T07:17:13Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-9H79-C924-X83X", "record": "GHSA-9H79-C924-X83X", "field": "database_specific.nvd_published_at"}, {"timestamp": "2026-10-16T07:17:13.353Z", "date_only": false, "value": "2026-10-16T07:17:13.353", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-19867", "record": "FKIE_CVE-2026-19867", "field": "published"}, {"timestamp": "2026-10-16T08:03:41.705Z", "date_only": false, "value": "2026-10-16T08:03:41.705333Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117449544245118978", "record": "CVE-2026-19867", "field": "creation_timestamp", "uuid": "6906b7f5-ae4b-4104-a973-3c50b12f1328", "content": "CVE-2026-19867 Uncapped mention keys in user notification properties allow CPU exhaustion during post processing Mattermost versions 11.10.x <= 11.10.0, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10 fail to cap the number and size of mention keys stored in a user's notification properties, and to bound the quadratic multibyte-keyword matching performed for each post, which allows an authenticated user to degrade post-processing latency and consume excessive CPU on behalf of other members of any channel they share via storing an oversized notify_props.mention_keys list on their own profile.. Mattermost Advisory ID: MMSA-2026-00773\nhttps://www.cve.org/CVERecord?id=CVE-2026-19867https://mattermost.com/security-updates#mattermost #Mattermost#CVE_2026_19867#bot", "url": "https://infosec.exchange/users/cve/statuses/117449544245118978"}, {"timestamp": "2026-10-16T09:30:28Z", "date_only": false, "value": "2026-10-16T09:30:28Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-9H79-C924-X83X", "record": "GHSA-9H79-C924-X83X", "field": "published"}, {"timestamp": "2026-10-16T09:30:28Z", "date_only": false, "value": "2026-10-16T09:30:28Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-9H79-C924-X83X", "record": "GHSA-9H79-C924-X83X", "field": "modified"}, {"timestamp": "2026-10-16T11:59:55.782Z", "date_only": false, "value": "2026-10-16T11:59:55.782423Z", "kind": "other", "label": "Recorded", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-19867", "field": "containers.adp.0.metrics.0.other.content.timestamp"}, {"timestamp": "2026-10-16T11:59:55.782Z", "date_only": false, "value": "2026-10-16T11:59:55.782423Z", "kind": "other", "label": "Recorded", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-19867", "record": "FKIE_CVE-2026-19867", "field": "metrics.ssvcV203.0.ssvcData.timestamp"}, {"timestamp": "2026-10-16T12:00:11.330Z", "date_only": false, "value": "2026-10-16T12:00:11.330Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2026-19867", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-10-16T12:00:11.330Z", "date_only": false, "value": "2026-10-16T12:00:11.330Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-19867", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-16T19:23:18.623Z", "date_only": false, "value": "2026-10-16T19:23:18.623", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-19867", "record": "FKIE_CVE-2026-19867", "field": "lastModified"}]}