{"items":[{"id":"NVI-00015417","kind":"vulnerability","title":"gun_http2 has an Origin Validation Error vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-36w4-95hv-5vwg","CVE-2026-43972"],"plain_summary":"GitHub lists this reviewed advisory for gun. 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-6670bef2a7d84cc5d7651a9f4abb7d0b"],"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":[],"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-6670bef2a7d84cc5d7651a9f4abb7d0b","url":"https://github.com/advisories/GHSA-36w4-95hv-5vwg","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-36w4-95hv-5vwg","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:59:04.660Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6670bef2a7d84cc5d7651a9f4abb7d0b"],"technology":"gun","known_exclusions":[],"conditions_summary":"Origin Validation Error vulnerability in ninenines gun (gun_http2 module) allows cross-origin cookie injection via unvalidated HTTP/2 PUSH_PROMISE authority.\n\nIn gun_http2:push_promise_frame/7, the :authority pseudo-header from an incoming PUSH_PROMISE frame is stored verbatim into the promised stream record without checking that it matches the connection's origin. When gun_http2:headers_frame/9 later processes the response headers for the promised stream, it calls gun_cookies:set_cookie_header/7 with the unvalidated server-supplied authority before any status branching and before user code can act. This violates RFC 7540 §10.6 / RFC 9113 §8.4, which require receivers to treat as a protocol error any push for a resource the server is not authoritative for.\n\nA malicious or compromised HTTP/2 server can plant cookies scoped to arbitrary third-party domains into the client's shared cookie store. This enables session fixation attacks against those domains and, if the planted cookie overrides a legitimate session token, may result in account takeover. No user interaction beyond making a normal HTTP/2 request to the attacker-controlled server is required.\n\nThis issue affects gun: from 2.","public_affected_ranges":[">= 2.0.0, < 2.4.0"]}],"null_published_at":"2026-11-03T10:03:31.364Z","source_updated_at":"2026-07-29T15:45:19.000Z","source_disclosed_at":"2026-06-08T15:32:59.000Z","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":"2026-11-03T09:59:04.660Z"}],"next_cursor":null,"snapshot_revision":"42594"}