{"cve":{"cve_id":"CVE-2026-29045","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00437,"epss_percentile":0.34833,"epss_as_of":"2026-06-23","description":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using serveStatic together with route-based middleware protections (e.g. app.use('/admin/*', ...)), inconsistent URL decoding allowed protected static resources to be accessed without authorization. The router used decodeURI, while serveStatic used decodeURIComponent. This mismatch allowed paths containing encoded slashes (%2F) to bypass middleware protections while still resolving to the intended filesystem path. This issue has been patched in version 4.12.4.","published_at":"2026-03-04T22:09:22.045000Z","last_modified_at":null,"cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-177"],"nvd_references":["https://github.com/honojs/hono/security/advisories/GHSA-q5qw-h33p-qvwr","https://github.com/honojs/hono/commit/6a0607a929d888893f0c91d92dce2fcfdb3662a3"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:29:38.297626Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"honojs","vendor_name":"honojs","product_slug":"hono","product_name":"hono","version_start":"< 4.12.4","version_start_inclusive":true,"version_end":"< 4.12.4","version_end_inclusive":true,"cpe23_uri":"cve5:honojs:hono:< 4.12.4:< 4.12.4"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/honojs/hono/security/advisories/GHSA-q5qw-h33p-qvwr","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/honojs/hono/commit/6a0607a929d888893f0c91d92dce2fcfdb3662a3","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-03-04T22:09:22.045000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:52:33.488308Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:52:33.488308Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:52:33.488308Z","label":"CVSS score revised","source":"cvelistv5"}]}