{"items":[{"id":"NVI-00016211","kind":"vulnerability","title":"gRPC-Go: xDS RBAC and HTTP/2 Vulnerabilities","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-hrxh-6v49-42gf"],"plain_summary":"GitHub lists this reviewed advisory for google.golang.org/grpc. 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-4921eea19a7f4abfe1a04f78e0986ef3"],"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-4921eea19a7f4abfe1a04f78e0986ef3","url":"https://github.com/advisories/GHSA-hrxh-6v49-42gf","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-hrxh-6v49-42gf","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:39.734Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4921eea19a7f4abfe1a04f78e0986ef3"],"technology":"google.golang.org/grpc","known_exclusions":[],"conditions_summary":"Multiple security vulnerabilities have been identified and addressed in grpc-go affecting the xDS RBAC authorization engine (internal/xds/rbac) and the HTTP/2 transport server implementation (internal/transport). These vulnerabilities could result in:\n\n- Authorization Bypass (Fail-Open) when translating xDS RBAC policies containing `Metadata` or `RequestedServerName` fields.\n- Denial of Service (High CPU Consumption) due to an HTTP/2 Rapid Reset mitigation bypass during client-initiated stream resets.\n- Denial of Service (Server Panic) when parsing crafted xDS RBAC policies containing `NOT` rules around unsupported fields.\n\n\n### Impact\n_What kind of vulnerability is it? Who is impacted?_\n\n#### xDS RBAC Authorization Bypass via `Metadata` & `RequestedServerName` matchers\n\n- Affected Component: xDS RBAC \n- Impact: When building policy matchers for gRPC RBAC from xDS configurations, unsupported `permission` and `principal` rules (specifically `Metadata` and `RequestedServerName`) were silently ignored and treated as no-ops.\n  - If an authorization policy relied purely on these matchers for access control, treating those rules as no-ops effectively removed the restrictions.\n- If these ","public_affected_ranges":["< 1.82.1"]}],"null_published_at":"2026-11-04T10:04:27.919Z","source_updated_at":"2026-07-21T22:03:58.000Z","source_disclosed_at":"2026-07-21T22:03:55.000Z","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":"2026-11-03T22:34:39.734Z"}],"next_cursor":null,"snapshot_revision":"42594"}