{"items":[{"id":"NVI-00017463","kind":"vulnerability","title":"Contour has Improper JWT Verification for Non-SNI Requests on Virtual Hosts with Fallback Certificate Enabled","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g3xr-5w5j-w4q4","CVE-2026-50149"],"plain_summary":"GitHub lists this reviewed advisory for github.com/projectcontour/contour. 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-01d1c58ffccbd2001e1a6a9881664d59"],"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":"2026-07-02T17:15:23.000Z","value":"6.5 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-01d1c58ffccbd2001e1a6a9881664d59"}],"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-01d1c58ffccbd2001e1a6a9881664d59","url":"https://github.com/advisories/GHSA-g3xr-5w5j-w4q4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g3xr-5w5j-w4q4","publisher":"GitHub Advisory Database","observed_at":"2026-11-05T03:47:42.887Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-01d1c58ffccbd2001e1a6a9881664d59"],"technology":"github.com/projectcontour/contour","known_exclusions":[],"conditions_summary":"### Impact\n\nWhen an `HTTPProxy` is configured with incompatible combination of both `.spec.virtualhost.tls.enableFallbackCertificate: true` and `.spec.virtualhost.jwtProviders`, Contour does not reject the configuration. Consequently, requests from clients that do not send TLS SNI or send an unrecognized SNI (one that does not match any `HTTPProxy` FQDN) bypass configured JWT verification and are proxied to upstream services without a valid token.\n\nTo list all `HTTPProxies` with this invalid configuration, run\n\n```bash\nkubectl get httpproxies -A -o json | jq -r '\n  .items[]\n  | select(.spec.virtualhost | .tls.enableFallbackCertificate and .jwtProviders)\n  | \"Invalid HTTPProxy found: \\(.metadata.namespace)/\\(.metadata.name)\"\n'\n```\n\n### Patches\n\nThis issue is fixed in Contour v1.33.5. Contour now rejects and marks invalid any `HTTPProxy` resources that combine `.spec.virtualhost.tls.enableFallbackCertificate: true` with `.spec.virtualhost.jwtProviders`. Affected resources will receive a status  condition with the error reason `TLSIncompatibleFeatures`.\n\n### Workarounds\n\nDo not enable `.spec.virtualhost.tls.enableFallbackCertificate` on `HTTPProxy` resources that also define `.spec.vi","public_affected_ranges":[">= 1.23.0, < 1.33.5"]}],"null_published_at":"2026-11-05T19:10:21.390Z","source_updated_at":"2026-07-02T17:15:23.000Z","source_disclosed_at":"2026-07-02T17:15:20.000Z","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":"2026-11-05T03:47:42.887Z"}],"next_cursor":null,"snapshot_revision":"42594"}