{"metadata": {"vulnerability": "CVE-2026-107838", "count": 11, "kinds": {"milestone": 3, "sighting": 2, "kev": 0, "other": 6}}, "data": [{"timestamp": "2026-10-08T22:34:49.290Z", "date_only": false, "value": "2026-10-08T22:34:49.290Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-107838", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-09T17:55:34.670Z", "date_only": false, "value": "2026-10-09T17:55:34.670Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-107838", "field": "cveMetadata.datePublished"}, {"timestamp": "2026-10-09T17:55:34.670Z", "date_only": false, "value": "2026-10-09T17:55:34.670Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / GitHub_M", "record": "CVE-2026-107838", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-09T18:03:30.495Z", "date_only": false, "value": "2026-10-09T18:03:30.495756Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117412266635635576", "record": "CVE-2026-107838", "field": "creation_timestamp", "uuid": "be78d075-26db-4a5a-9ca8-c61f5441de9f", "content": "CVE-2026-107838 RIOT: nanocoap_fileserver ignores response initialization failure, leading to reachable assertion RIOT is an open-source microcontroller operating system designed for Internet of Things devices and other embedded systems. From version 2023.07 through version 2026.07, nanocoap_fileserver callers in sys/net/application_layer/nanocoap/fileserver.c ignore a failure returned by _resp_init() when coap_build_reply() cannot fit a response header into the response buffer. A remote client can send a CoAP request with a sufficiently large extended token when nanocoap_token_ext is enabled, causing response initialization to fail while _get_file() or _get_directory() continues with stale response state. The path then reaches _calc_szx2() and its pdu->payload_len > reserve assertion, terminating the affected service or device task. No fixed release is available as of this review.\nhttps://www.cve.org/CVERecord?id=CVE-2026-107838https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-39j3-3v73-5mj2https://github.com/RIOT-OS/RIOT/pull/22745https://github.com/RIOT-OS/RIOT/commit/d3a47289c58d108575a19e623e4d3f647659e743#RIOT-OS #RIOT#CVE_2026_107838#bot", "url": "https://infosec.exchange/users/cve/statuses/117412266635635576"}, {"timestamp": "2026-10-09T18:17:05.640Z", "date_only": false, "value": "2026-10-09T18:17:05.640", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-107838", "record": "FKIE_CVE-2026-107838", "field": "published"}, {"timestamp": "2026-10-09T18:31:30.735Z", "date_only": false, "value": "2026-10-09T18:31:30.735786Z", "kind": "sighting", "label": "Seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mxhmbclmjd2g", "record": "CVE-2026-107838", "field": "creation_timestamp", "uuid": "6599d61f-9034-4e01-8d0a-30c7900ff88a", "content": "\ud83d\udfe0 CVE-2026-107838 - High (7.5)\n\nRIOT is an open-source microcontroller operating system designed for Internet of Things devices a...\n\nhttps://www.thehackerwire.com/vulnerability/CVE-2026-107838/\n\n#infosec #cybersecurity #CVE #vulnerability #security #patchstack", "url": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mxhmbclmjd2g"}, {"timestamp": "2026-10-13T17:07:15.908Z", "date_only": false, "value": "2026-10-13T17:07:15.908632Z", "kind": "other", "label": "Recorded", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-107838", "field": "containers.adp.0.metrics.0.other.content.timestamp"}, {"timestamp": "2026-10-13T17:07:15.908Z", "date_only": false, "value": "2026-10-13T17:07:15.908632Z", "kind": "other", "label": "Recorded", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-107838", "record": "FKIE_CVE-2026-107838", "field": "metrics.ssvcV203.0.ssvcData.timestamp"}, {"timestamp": "2026-10-13T17:07:38.700Z", "date_only": false, "value": "2026-10-13T17:07:38.700Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2026-107838", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-10-13T17:07:38.700Z", "date_only": false, "value": "2026-10-13T17:07:38.700Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2026-107838", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-16T17:17:04.113Z", "date_only": false, "value": "2026-10-16T17:17:04.113", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-107838", "record": "FKIE_CVE-2026-107838", "field": "lastModified"}]}