{"items":[{"id":"NVI-00013815","kind":"vulnerability","title":"AnyIO: TLSStream IDNA 2003 host name encoding enables potential TLS certificate spoofing","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-82r6-8w77-94w6","CVE-2026-63374"],"plain_summary":"GitHub lists this reviewed advisory for anyio. 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-4c0aa81f3dfc670b2b02b5a46902eae8"],"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":"2026-09-28T17:17:50.357Z","value":"9.3 CRITICAL (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-4c0aa81f3dfc670b2b02b5a46902eae8"}],"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-0a63012f7da8a178d8d715521167c899","url":"https://github.com/advisories/GHSA-82r6-8w77-94w6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-82r6-8w77-94w6","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:49.409Z"},{"id":"sr-4c0aa81f3dfc670b2b02b5a46902eae8","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63374","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-63374","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T15:07:15.902Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0a63012f7da8a178d8d715521167c899"],"technology":"anyio","known_exclusions":[],"conditions_summary":"### Impact\nServices using internationalized (non-ASCII) domain names are potentially vulnerable to TLS connections made from AnyIO's `connect_tcp()` or directly via `TLSStream.wrap()` where the connection has (through other means) been hijacked and redirected to a malicious server. The attacker would obtain a legitimate certificate using the IDNA 2003 encoded version of the domain name and offer it to the connecting client, making the certificate validate properly on the client's end.\n\n### Patches\nThe vulnerability will be patched in v4.14.2.\n\n### Workarounds\nEncode host names via the `idna` package prior to connecting.","public_affected_ranges":["< 4.14.2"]}],"null_published_at":"2026-11-08T19:53:44.055Z","source_updated_at":"2026-09-18T17:17:19.000Z","source_disclosed_at":"2026-09-18T17:17:18.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-01T14:29:49.409Z"},{"id":"NVI-00013815","kind":"vulnerability","title":"AnyIO: TLSStream IDNA 2003 host name encoding enables potential TLS certificate spoofing","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-82r6-8w77-94w6","CVE-2026-63374"],"plain_summary":"GitHub lists this reviewed advisory for anyio. 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-0a63012f7da8a178d8d715521167c899"],"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-0a63012f7da8a178d8d715521167c899","url":"https://github.com/advisories/GHSA-82r6-8w77-94w6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-82r6-8w77-94w6","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:49.409Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0a63012f7da8a178d8d715521167c899"],"technology":"anyio","known_exclusions":[],"conditions_summary":"### Impact\nServices using internationalized (non-ASCII) domain names are potentially vulnerable to TLS connections made from AnyIO's `connect_tcp()` or directly via `TLSStream.wrap()` where the connection has (through other means) been hijacked and redirected to a malicious server. The attacker would obtain a legitimate certificate using the IDNA 2003 encoded version of the domain name and offer it to the connecting client, making the certificate validate properly on the client's end.\n\n### Patches\nThe vulnerability will be patched in v4.14.2.\n\n### Workarounds\nEncode host names via the `idna` package prior to connecting.","public_affected_ranges":["< 4.14.2"]}],"null_published_at":"2026-11-02T10:00:37.154Z","source_updated_at":"2026-09-18T17:17:19.000Z","source_disclosed_at":"2026-09-18T17:17:18.000Z","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":"2026-11-01T14:29:49.409Z"}],"next_cursor":null,"snapshot_revision":"42594"}