{"items":[{"id":"NVI-00016259","kind":"vulnerability","title":"React Router: RSCErrorHandler Missing Protocol Validation (XSS)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-h8fp-f39c-q6mh","CVE-2026-53667"],"plain_summary":"GitHub lists this reviewed advisory for react-router. 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-586df8ac558e03b3a92fd40f6bed2c47"],"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":"2026-07-23T19:35:59.000Z","value":"6.9 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-586df8ac558e03b3a92fd40f6bed2c47"}],"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-586df8ac558e03b3a92fd40f6bed2c47","url":"https://github.com/advisories/GHSA-h8fp-f39c-q6mh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-h8fp-f39c-q6mh","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T17:42:43.803Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-586df8ac558e03b3a92fd40f6bed2c47"],"technology":"react-router","known_exclusions":[],"conditions_summary":"This is a follow up to https://github.com/remix-run/react-router/security/advisories/GHSA-8646-j5j9-6r62.  React Router was alerted of a code path in the (unstable) RSC error handling path in which redirects from untrusted sources could still result in an XSS vector via attacker-supplied redirect targets\n\n> [!NOTE]\n> This only affects your application if you are using the unstable RSC APIs","public_affected_ranges":[">= 7.11.0, < 7.18.0"]}],"null_published_at":"2026-11-04T10:04:27.924Z","source_updated_at":"2026-07-23T19:35:59.000Z","source_disclosed_at":"2026-07-23T19:35:57.000Z","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":"2026-11-03T17:42:43.803Z"}],"next_cursor":null,"snapshot_revision":"42594"}