{"items":[{"id":"NVI-00016073","kind":"vulnerability","title":"hono: Path traversal in `serve-static` on Windows via encoded backslash (`%5C`)","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-wwfh-h76j-fc44","CVE-2026-54286"],"plain_summary":"GitHub lists this reviewed advisory for hono. 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-64c59352823aac5fc5db8b17860dccf7"],"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":"2026-07-21T15:27:08.000Z","value":"5.9 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1641e8ec4a1f1e2f71ec48d507b3deba"},{"kind":"CVSS","as_of":"2026-10-25T23:10:00.167Z","value":"5.9 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-64c59352823aac5fc5db8b17860dccf7"}],"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-1641e8ec4a1f1e2f71ec48d507b3deba","url":"https://github.com/advisories/GHSA-wwfh-h76j-fc44","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-wwfh-h76j-fc44","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:49.300Z"},{"id":"sr-64c59352823aac5fc5db8b17860dccf7","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54286","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-54286","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T01:48:12.360Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1641e8ec4a1f1e2f71ec48d507b3deba"],"technology":"hono","known_exclusions":[],"conditions_summary":"### Summary\n\nOn Windows hosts, an encoded backslash (`%5C`) in the request path decodes to `\\`, which the Windows path resolver treats as a separator. `serve-static` then resolves a single URL segment such as `admin\\secret.txt` into a nested file under the root and serves it, letting an attacker read static files meant to be protected behind prefix-mounted middleware. Directory escape (`..`) remains blocked.\n\n### Details\n\nThe router splits paths only on `/`, so `/admin%5Csecret.txt` is one segment and middleware on `/admin/*` does not run. The `serve-static` guard rejects `.`/`..` and consecutive separators but lets a lone `\\` through; on Windows the file resolver re-splits it into the protected subtree.\n\nThis affects Windows hosts serving static files via the Node, Bun, or Deno adapters that guard a static subtree with prefix-mounted middleware.\n\n### Impact\n\nAn unauthenticated attacker can read static files under a middleware-guarded prefix on Windows hosts. The read stays within the configured root; escape outside the root is not possible.","public_affected_ranges":["< 4.12.25"]}],"null_published_at":"2026-11-08T19:53:44.063Z","source_updated_at":"2026-07-21T15:27:08.000Z","source_disclosed_at":"2026-06-16T14:09:03.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-03T22:34:49.300Z"},{"id":"NVI-00016073","kind":"vulnerability","title":"hono: Path traversal in `serve-static` on Windows via encoded backslash (`%5C`)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-wwfh-h76j-fc44","CVE-2026-54286"],"plain_summary":"GitHub lists this reviewed advisory for hono. 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-1641e8ec4a1f1e2f71ec48d507b3deba"],"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":"2026-07-21T15:27:08.000Z","value":"5.9 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1641e8ec4a1f1e2f71ec48d507b3deba"}],"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-1641e8ec4a1f1e2f71ec48d507b3deba","url":"https://github.com/advisories/GHSA-wwfh-h76j-fc44","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-wwfh-h76j-fc44","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:49.300Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1641e8ec4a1f1e2f71ec48d507b3deba"],"technology":"hono","known_exclusions":[],"conditions_summary":"### Summary\n\nOn Windows hosts, an encoded backslash (`%5C`) in the request path decodes to `\\`, which the Windows path resolver treats as a separator. `serve-static` then resolves a single URL segment such as `admin\\secret.txt` into a nested file under the root and serves it, letting an attacker read static files meant to be protected behind prefix-mounted middleware. Directory escape (`..`) remains blocked.\n\n### Details\n\nThe router splits paths only on `/`, so `/admin%5Csecret.txt` is one segment and middleware on `/admin/*` does not run. The `serve-static` guard rejects `.`/`..` and consecutive separators but lets a lone `\\` through; on Windows the file resolver re-splits it into the protected subtree.\n\nThis affects Windows hosts serving static files via the Node, Bun, or Deno adapters that guard a static subtree with prefix-mounted middleware.\n\n### Impact\n\nAn unauthenticated attacker can read static files under a middleware-guarded prefix on Windows hosts. The read stays within the configured root; escape outside the root is not possible.","public_affected_ranges":["< 4.12.25"]}],"null_published_at":"2026-11-04T10:04:27.878Z","source_updated_at":"2026-07-21T15:27:08.000Z","source_disclosed_at":"2026-06-16T14:09:03.000Z","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":"2026-11-03T22:34:49.300Z"}],"next_cursor":null,"snapshot_revision":"42594"}