{"metadata": {"vulnerability": "CVE-2026-55367", "count": 13, "kinds": {"milestone": 4, "sighting": 2, "kev": 0, "other": 7}}, "data": [{"timestamp": "2026-06-16T18:57:40.180Z", "date_only": false, "value": "2026-06-16T18:57:40.180Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-55367", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-11-04T21:39:41.868Z", "date_only": false, "value": "2026-11-04T21:39:41.868Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-55367", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-11-04T21:39:41.868Z", "date_only": false, "value": "2026-11-04T21:39:41.868Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / GitHub_M", "record": "CVE-2026-55367", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-11-04T21:45:51.358Z", "date_only": false, "value": "2026-11-04T21:45:51.358316Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117560361021721572", "record": "CVE-2026-55367", "field": "creation_timestamp", "uuid": "4ffbeaf8-3fc3-4097-b05c-c15e8ae1f1cd", "content": "CVE-2026-55367 h2o: heap exhaustion using capsules h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 4212ce114506a073505fd389db16ad2ba4e582a0, a client could send an incomplete CONNECT-UDP Capsule with an excessively large declared length, causing H2O to keep buffering received bytes without a per-Capsule limit while waiting for the remainder. Deployments that enabled proxy.connect-udp and accepted CONNECT-UDP requests could exhaust server memory and lose availability. This vulnerability is fixed with commit 4212ce114506a073505fd389db16ad2ba4e582a0.\nhttps://www.cve.org/CVERecord?id=CVE-2026-55367https://github.com/h2o/h2o/security/advisories/GHSA-q342-qp8v-p44chttps://github.com/h2o/h2o/pull/3754https://github.com/h2o/h2o/commit/4212ce114506a073505fd389db16ad2ba4e582a0#h2o#CVE_2026_55367#bot", "url": "https://infosec.exchange/users/cve/statuses/117560361021721572"}, {"timestamp": "2026-11-04T22:18:06.167Z", "date_only": false, "value": "2026-11-04T22:18:06.167", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-55367", "record": "FKIE_CVE-2026-55367", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-11-05T00:00:00Z", "date_only": false, "value": "2026-11-05T00:00:00Z", "kind": "milestone", "label": "Published", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-55367", "record": "UBUNTU-CVE-2026-55367", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-11-05T00:00:00Z", "date_only": false, "value": "2026-11-05T00:00:00Z", "kind": "other", "label": "Updated", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-55367", "record": "UBUNTU-CVE-2026-55367", "field": "modified", "linked_record": true}, {"timestamp": "2026-11-05T01:46:24.637Z", "date_only": false, "value": "2026-11-05T01:46:24.637610Z", "kind": "sighting", "label": "Seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mzjqov43oc2j", "record": "CVE-2026-55367", "field": "creation_timestamp", "uuid": "9937693d-9a4a-4a67-81d9-e5b456b4b571", "content": "\ud83d\udfe0 CVE-2026-55367 - High (7.5)\n\nh2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 4212ce114506a...\n\nhttps://www.thehackerwire.com/vulnerability/CVE-2026-55367/\n\n#infosec #cybersecurity #CVE #vulnerability #security #patchstack", "url": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mzjqov43oc2j"}, {"timestamp": "2026-11-05T19:59:16.316Z", "date_only": false, "value": "2026-11-05T19:59:16.316316Z", "kind": "other", "label": "Recorded", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-55367", "field": "containers.adp.0.metrics.0.other.content.timestamp"}, {"timestamp": "2026-11-05T19:59:16.316Z", "date_only": false, "value": "2026-11-05T19:59:16.316316Z", "kind": "other", "label": "Recorded", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-55367", "record": "FKIE_CVE-2026-55367", "field": "metrics.ssvcV203.0.ssvcData.timestamp", "linked_record": true}, {"timestamp": "2026-11-05T20:01:20.480Z", "date_only": false, "value": "2026-11-05T20:01:20.480Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2026-55367", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-11-05T20:01:20.480Z", "date_only": false, "value": "2026-11-05T20:01:20.480Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-55367", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2026-11-05T20:17:58.603Z", "date_only": false, "value": "2026-11-05T20:17:58.603", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-55367", "record": "FKIE_CVE-2026-55367", "field": "lastModified", "linked_record": true}], "metrics": {"as_of": "2026-11-07T01:08:18.916Z", "anchors": {"origin": {"timestamp": "2026-11-04T21:39:41.868Z", "date_only": false, "value": "2026-11-04T21:39:41.868Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-55367", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "discovery": null, "report": null, "acknowledgement": null, "disclosure": {"timestamp": "2026-11-04T21:39:41.868Z", "date_only": false, "value": "2026-11-04T21:39:41.868Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-55367", "field": "cveMetadata.datePublished", "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": 185317.048239, "hours": 51.47695784416666, "days": 2.1448732435069444, "min_seconds": 185317.048239, "max_seconds": 185317.048239, "approximate": false, "ongoing": true, "order_known": true, "batch_listing": false, "end_before_start": false, "start": {"timestamp": "2026-11-04T21:39:41.868Z", "date_only": false, "value": "2026-11-04T21:39:41.868Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-55367", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "end": {"timestamp": "2026-11-07T01:08:18.916Z", "date_only": false, "label": "As of", "source": "Calculation clock"}}, "exploitation_to_patch": {"available": false, "missing": ["start"]}, "exploit_publication_to_patch": {"available": false, "missing": ["start"]}}}