{"metadata": {"vulnerability": "CVE-2026-16453", "count": 13, "kinds": {"milestone": 4, "sighting": 1, "kev": 0, "other": 8}}, "data": [{"timestamp": "2026-07-21T10:00:44.943Z", "date_only": false, "value": "2026-07-21T10:00:44.943Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-16453", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-16T07:08:48.627Z", "date_only": false, "value": "2026-10-16T07:08:48.627Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-16453", "field": "cveMetadata.datePublished"}, {"timestamp": "2026-10-16T07:08:48.627Z", "date_only": false, "value": "2026-10-16T07:08:48.627Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / Mattermost", "record": "CVE-2026-16453", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-16T08:07:43.745Z", "date_only": false, "value": "2026-10-16T08:07:43.745811Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117449560112287365", "record": "CVE-2026-16453", "field": "creation_timestamp", "uuid": "e07e1979-abc7-490e-a44f-0188782e5393", "content": "CVE-2026-16453 Mattermost SAML RelayState forgery allows unauthorized team membership Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to verify the integrity of the SAML RelayState POST parameter which allows an authenticated SAML user to join any team, including invite-only teams, via forging the team_id or invite_id fields in the RelayState.. Mattermost Advisory ID: MMSA-2026-00727\nhttps://www.cve.org/CVERecord?id=CVE-2026-16453https://mattermost.com/security-updates#mattermost #Mattermost#CVE_2026_16453#bot", "url": "https://infosec.exchange/users/cve/statuses/117449560112287365"}, {"timestamp": "2026-10-16T08:17:12Z", "date_only": false, "value": "2026-10-16T08:17:12Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-X9F3-CQMX-7PHQ", "record": "GHSA-X9F3-CQMX-7PHQ", "field": "database_specific.nvd_published_at"}, {"timestamp": "2026-10-16T08:17:12.640Z", "date_only": false, "value": "2026-10-16T08:17:12.640", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-16453", "record": "FKIE_CVE-2026-16453", "field": "published"}, {"timestamp": "2026-10-16T09:30:29Z", "date_only": false, "value": "2026-10-16T09:30:29Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-X9F3-CQMX-7PHQ", "record": "GHSA-X9F3-CQMX-7PHQ", "field": "published"}, {"timestamp": "2026-10-16T09:30:29Z", "date_only": false, "value": "2026-10-16T09:30:29Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-X9F3-CQMX-7PHQ", "record": "GHSA-X9F3-CQMX-7PHQ", "field": "modified"}, {"timestamp": "2026-10-16T14:17:45.764Z", "date_only": false, "value": "2026-10-16T14:17:45.764516Z", "kind": "other", "label": "Recorded", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-16453", "field": "containers.adp.0.metrics.0.other.content.timestamp"}, {"timestamp": "2026-10-16T14:17:45.764Z", "date_only": false, "value": "2026-10-16T14:17:45.764516Z", "kind": "other", "label": "Recorded", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-16453", "record": "FKIE_CVE-2026-16453", "field": "metrics.ssvcV203.0.ssvcData.timestamp"}, {"timestamp": "2026-10-16T14:18:12.181Z", "date_only": false, "value": "2026-10-16T14:18:12.181Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2026-16453", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-10-16T14:18:12.181Z", "date_only": false, "value": "2026-10-16T14:18:12.181Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-16453", "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-2026-16453", "record": "FKIE_CVE-2026-16453", "field": "lastModified"}]}