{"items":[{"id":"NVI-00013932","kind":"vulnerability","title":"Hono: Unbounded dot-notation nesting in `parseBody()` can cause memory exhaustion","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g6gw-c38x-mqfc","CVE-2026-84364"],"plain_summary":"GitHub lists this reviewed advisory for hono. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1fd91b76dfb4fa5a8309af9a50a63d5a"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-08T21:23:04.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1fd91b76dfb4fa5a8309af9a50a63d5a"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1fd91b76dfb4fa5a8309af9a50a63d5a","url":"https://github.com/advisories/GHSA-g6gw-c38x-mqfc","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g6gw-c38x-mqfc","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T22:54:12.705Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1fd91b76dfb4fa5a8309af9a50a63d5a"],"technology":"hono","known_exclusions":[],"conditions_summary":"### Summary\n\nWhen `parseBody()` expands dot-separated form field names into nested objects, it does not limit the nesting depth or the total number of objects created. A request body well within a normal size limit can therefore allocate an object graph far larger than the request itself, and concurrent requests can exhaust the heap and terminate the process.\n\n### Details\n\nEach dot-separated segment of a field name creates an intermediate object. Neither the segments within a single field name nor the total across a request was bounded, and empty segments were preserved, so a field name could encode one nesting level per byte.\n\nBoth shapes produce the effect: a single deeply dotted field name, and a large number of shallowly dotted ones within one body. A request body size limit does not prevent it, because the amplification happens after the body has been accepted.\n\nDot-notation parsing is not enabled by default.\n\n### Impact\n\nAn attacker who can reach an endpoint that parses request bodies with dot-notation enabled can send concurrent requests whose memory cost is disproportionate to their size.\n\nThis may lead to:\n\n- exhaustion of the JavaScript heap and termination of the server ","public_affected_ranges":["< 4.13.5"]}],"null_published_at":"2026-11-02T10:00:37.176Z","source_updated_at":"2026-09-08T21:23:04.000Z","source_disclosed_at":"2026-09-08T21:23:02.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-01T22:54:12.705Z"}],"next_cursor":null,"snapshot_revision":"42594"}