{"metadata": {"vulnerability": "CVE-2026-56386", "count": 13, "kinds": {"milestone": 4, "sighting": 1, "kev": 0, "other": 8}, "linked_omitted": 0}, "data": [{"timestamp": "2026-06-21T04:43:24.873Z", "date_only": false, "value": "2026-06-21T04:43:24.873Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-56386", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-21T11:37:47.458Z", "date_only": false, "value": "2026-10-21T11:37:47.458Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-56386", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-21T11:37:47.458Z", "date_only": false, "value": "2026-10-21T11:37:47.458Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / apache", "record": "CVE-2026-56386", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-21T12:17:21Z", "date_only": false, "value": "2026-10-21T12:17:21Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-WJ5X-6JJ2-M348", "record": "GHSA-WJ5X-6JJ2-M348", "field": "database_specific.nvd_published_at", "linked_record": true}, {"timestamp": "2026-10-21T12:17:21.410Z", "date_only": false, "value": "2026-10-21T12:17:21.410", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-56386", "record": "FKIE_CVE-2026-56386", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-21T12:31:08Z", "date_only": false, "value": "2026-10-21T12:31:08Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-WJ5X-6JJ2-M348", "record": "GHSA-WJ5X-6JJ2-M348", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-21T13:07:50.344Z", "date_only": false, "value": "2026-10-21T13:07:50.344384Z", "kind": "other", "label": "Recorded", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-56386", "field": "containers.adp.0.metrics.1.other.content.timestamp"}, {"timestamp": "2026-10-21T13:07:50.344Z", "date_only": false, "value": "2026-10-21T13:07:50.344384Z", "kind": "other", "label": "Recorded", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-56386", "record": "FKIE_CVE-2026-56386", "field": "metrics.ssvcV203.0.ssvcData.timestamp", "linked_record": true}, {"timestamp": "2026-10-21T13:07:53.942Z", "date_only": false, "value": "2026-10-21T13:07:53.942Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2026-56386", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-10-21T13:07:53.942Z", "date_only": false, "value": "2026-10-21T13:07:53.942Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-56386", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-21T15:42:26Z", "date_only": false, "value": "2026-10-21T15:42:26Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-WJ5X-6JJ2-M348", "record": "GHSA-WJ5X-6JJ2-M348", "field": "modified", "linked_record": true}, {"timestamp": "2026-10-21T17:21:26.217Z", "date_only": false, "value": "2026-10-21T17:21:26.217037Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117480048934966553", "record": "CVE-2026-56386", "field": "creation_timestamp", "uuid": "e65fc55d-2f69-4805-a629-1aacafedcf3f", "content": "CVE-2026-56386 Apache bRPC: Integer Underflow and Out-of-Bounds Read in HTTP/2 DATA Frame Parser Integer underflow and out-of-bounds read in the HTTP/2 server DATA frame parser in Apache bRPC allows an unauthenticated remote attacker to cause denial of service by sending a malformed DATA frame with the PADDED flag set and a zero-length payload.\nRoot Cause:The HTTP/2 DATA frame handler computed the fragment size from the attacker-controlled payload length and, when the PADDED flag was present, decremented the fragment size before ensuring that the frame contained the mandatory pad length byte. A zero-length padded DATA frame could therefore underflow the unsigned fragment size and read the pad length byte past the end of the frame buffer.\nAffected Scenarios:Apache bRPC servers that accept HTTP/2 traffic are affected when a remote client can send crafted HTTP/2 frames to the server. HTTP/2 may be reached through cleartext h2c detection on an HTTP port or through TLS ALPN negotiation.\nHow to Fix:(Choose one of the following options)1. Upgrade Apache bRPC to version 1.18.0, which fixes this issue.2. Apply this patch:  https://github.com/apache/brpc/pull/3325 \nNote:The fix validates that a padded DATA frame has enough payload bytes for the pad length field before decrementing the fragment size or reading the pad length byte. Malformed zero-length padded DATA frames are rejected with HTTP/2 FRAME_SIZE_ERROR.\nhttps://www.cve.org/CVERecord?id=CVE-2026-56386https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb#apache #ApacheSoftwareFoundation #ApachebRPC#CVE_2026_56386#bot", "url": "https://infosec.exchange/users/cve/statuses/117480048934966553"}, {"timestamp": "2026-10-26T21:10:00.170Z", "date_only": false, "value": "2026-10-26T21:10:00.170", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-56386", "record": "FKIE_CVE-2026-56386", "field": "lastModified", "linked_record": true}], "metrics": {"as_of": "2026-11-12T05:12:41.237Z", "anchors": {"origin": {"timestamp": "2026-10-21T11:37:47.458Z", "date_only": false, "value": "2026-10-21T11:37:47.458Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-56386", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "discovery": null, "report": null, "acknowledgement": null, "disclosure": {"timestamp": "2026-10-21T11:37:47.458Z", "date_only": false, "value": "2026-10-21T11:37:47.458Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-56386", "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": 1877693.77989, "hours": 521.581605525, "days": 21.732566896875, "min_seconds": 1877693.77989, "max_seconds": 1877693.77989, "approximate": false, "ongoing": true, "order_known": true, "batch_listing": false, "end_before_start": false, "start": {"timestamp": "2026-10-21T11:37:47.458Z", "date_only": false, "value": "2026-10-21T11:37:47.458Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-56386", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "end": {"timestamp": "2026-11-12T05:12:41.237Z", "date_only": false, "label": "As of", "source": "Calculation clock"}}, "exploitation_to_patch": {"available": false, "missing": ["start"]}, "exploit_publication_to_patch": {"available": false, "missing": ["start"]}}}