{"items":[{"id":"NVI-00015286","kind":"vulnerability","title":"Hono: Algorithmic Complexity DoS in Language Middleware","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-54fx-42gc-7vw4","CVE-2026-71848"],"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-617085d5edf688878e59b5255dae27af"],"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":"2026-08-07T18:36:33.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-5271b149bcb51fc043c067a573675e69"},{"kind":"CVSS","as_of":"2026-10-24T15:10:00.190Z","value":"5.3 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-617085d5edf688878e59b5255dae27af"}],"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-5271b149bcb51fc043c067a573675e69","url":"https://github.com/advisories/GHSA-54fx-42gc-7vw4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-54fx-42gc-7vw4","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T02:28:46.523Z"},{"id":"sr-617085d5edf688878e59b5255dae27af","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-71848","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-71848","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T15:08:07.832Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5271b149bcb51fc043c067a573675e69"],"technology":"hono","known_exclusions":[],"conditions_summary":"### Summary\n\nThe `languageDetector` middleware is vulnerable to algorithmic complexity denial of service when processing a crafted language tag containing a large number of hyphen-separated subtags.\n\n### Details\n\nTo implement progressive language-tag truncation, `normalizeLanguage()` repeatedly calls `parts.slice(0, i).join('-')` for every possible prefix. The total amount of string processing grows quadratically with the number of subtags.\n\nLanguage values may come from a query parameter, cookie, `Accept-Language` header, or URL path, depending on the detector configuration. The default detector order enables query-string, cookie, and header detection, so applications using `languageDetector()` may expose this processing to unauthenticated requests.\n\nRequest-size limits reduce the maximum cost of a single request but do not eliminate the issue. Inputs accepted by common JavaScript runtimes can still cause noticeable synchronous event-loop blocking.\n\n### Impact\n\nAn attacker may repeatedly send requests containing long, hyphen-separated language tags, causing excessive CPU consumption and preventing unrelated requests from being processed.\n\nThe practical impact depends on the runtim","public_affected_ranges":[">= 4.12.0, < 4.12.34"]}],"null_published_at":"2026-11-08T19:53:44.062Z","source_updated_at":"2026-08-07T18:36:33.000Z","source_disclosed_at":"2026-08-07T18:36:31.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-03T02:28:46.523Z"},{"id":"NVI-00015286","kind":"vulnerability","title":"Hono: Algorithmic Complexity DoS in Language Middleware","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-54fx-42gc-7vw4","CVE-2026-71848"],"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-5271b149bcb51fc043c067a573675e69"],"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":"2026-08-07T18:36:33.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-5271b149bcb51fc043c067a573675e69"}],"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-5271b149bcb51fc043c067a573675e69","url":"https://github.com/advisories/GHSA-54fx-42gc-7vw4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-54fx-42gc-7vw4","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T02:28:46.523Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5271b149bcb51fc043c067a573675e69"],"technology":"hono","known_exclusions":[],"conditions_summary":"### Summary\n\nThe `languageDetector` middleware is vulnerable to algorithmic complexity denial of service when processing a crafted language tag containing a large number of hyphen-separated subtags.\n\n### Details\n\nTo implement progressive language-tag truncation, `normalizeLanguage()` repeatedly calls `parts.slice(0, i).join('-')` for every possible prefix. The total amount of string processing grows quadratically with the number of subtags.\n\nLanguage values may come from a query parameter, cookie, `Accept-Language` header, or URL path, depending on the detector configuration. The default detector order enables query-string, cookie, and header detection, so applications using `languageDetector()` may expose this processing to unauthenticated requests.\n\nRequest-size limits reduce the maximum cost of a single request but do not eliminate the issue. Inputs accepted by common JavaScript runtimes can still cause noticeable synchronous event-loop blocking.\n\n### Impact\n\nAn attacker may repeatedly send requests containing long, hyphen-separated language tags, causing excessive CPU consumption and preventing unrelated requests from being processed.\n\nThe practical impact depends on the runtim","public_affected_ranges":[">= 4.12.0, < 4.12.34"]}],"null_published_at":"2026-11-03T10:03:26.567Z","source_updated_at":"2026-08-07T18:36:33.000Z","source_disclosed_at":"2026-08-07T18:36:31.000Z","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":"2026-11-03T02:28:46.523Z"}],"next_cursor":null,"snapshot_revision":"42594"}