{"id":"GHSA-f577-qrjj-4474","revision":null,"records":[{"revision":"61e9bc16cf114a838378c918aaf4844f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-47673","aliases":[],"title":"Hono: JWT middleware accepts any Authorization scheme, not only Bearer","description":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the jwt and jwk middlewares do not verify that the Authorization header value uses theBearer scheme. Any two-part header value — regardless of the scheme name in the first position — proceeds to JWT verification. A request presenting a valid JWT under a non-Bearer scheme identifier (such as Basic or Token) is authenticated identically to a correctly formed Bearer request. This vulnerability is fixed in 4.12.21.","state":0,"publishedAt":"2026-05-28T15:29:44.16+00:00","modifiedAt":"2026-05-30T01:59:15.167+00:00","affected":[{"ecosystem":"Vendor product","name":"hono","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"honojs\",\n                    \"product\": \"hono\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 4.12.21\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","score":4.8,"severity":"MEDIUM"}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-f577-qrjj-4474"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-47673","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-47673","identifiers":["CVE-2026-47673"]},"retained":false,"historicalAffected":[]},{"revision":"ce707af1a4c8402fafade86081dc6418","observedAt":"2026-11-09T12:02:49.432+00:00","statement":{"source":"euvd","id":"EUVD-2026-32927","aliases":["CVE-2026-47673","GHSA-f577-qrjj-4474"],"title":"Hono is a Web application framework that provides support for any JavaScript runtime. 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A request presenting a valid JWT under a non-Bearer scheme identifier (such as Basic or Token) is authenticated identically to a correctly formed Bearer request. This vulnerability is fixed in 4.12.21.","state":0,"publishedAt":"2026-05-28T17:16:32.233+00:00","modifiedAt":"2026-10-14T20:10:00.19+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","score":4.8,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-f577-qrjj-4474"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-47673","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-285"],"productCriteria":["cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-05-28T17:16:32.233","lastModified":"2026-10-14T20:10:00.190"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-47673","identifiers":["CVE-2026-47673"]},"retained":false,"historicalAffected":[]},{"revision":"f2b6e2202e964692b1fccee6b3139b66","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-f577-qrjj-4474","aliases":["CVE-2026-47673"],"title":"Hono: JWT middleware accepts any Authorization scheme, not only Bearer","description":"### Summary\n\nThe `jwt` and `jwk` middlewares do not verify that the `Authorization` header value uses the`Bearer` scheme. Any two-part header value — regardless of the scheme name in the first position — proceeds to JWT verification. A request presenting a valid JWT under a non-`Bearer` scheme identifier (such as `Basic` or `Token`) is authenticated identically to a correctly formed `Bearer` request.\n\n### Details\n\nWhen processing an `Authorization` (or custom) header, the middleware splits the value on whitespace and uses the second token as the JWT to verify. It does not check that the first token is `bearer` (case-insensitively). RFC 6750 specifies that JWT bearer tokens must be presented using the `Bearer` scheme; other scheme identifiers carry distinct semantics and may be subject to different policies in network-layer security controls.\n\nThis discrepancy means that scheme-aware external controls — such as WAF rules, API gateways, or reverse proxies that apply policies specific to the `Bearer` scheme identifier — can be bypassed by presenting a valid JWT under a different scheme name.\n\nThis issue affects `hono/jwt` and `hono/jwk` middleware.\n\n### Impact\n\nAn attacker who possesses a valid JWT may present it under a non-`Bearer` scheme identifier and still pass middleware authentication.\n\nThis may lead to:\n\n- Bypass of network-layer security controls that inspect or filter requests based on the authorization scheme identifier\n- Token reuse across authentication schemes in applications that use multiple authorization mechanisms\n\nThis issue affects applications where `hono/jwt` or `hono/jwk` authentication is combined with external controls that enforce scheme-based access policies.","state":0,"publishedAt":"2026-06-04T17:52:04+00:00","modifiedAt":"2026-09-10T03:50:49.2242292+00:00","affected":[{"ecosystem":"npm","name":"hono","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"4.12.21"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-f577-qrjj-4474","https://nvd.nist.gov/vuln/detail/CVE-2026-47673","https://github.com/honojs/hono/commit/5463db2735476959b8af67756f4e513f4fe19115","https://github.com/honojs/hono","https://github.com/honojs/hono/releases/tag/v4.12.21"],"sourceUrl":"https://github.com/advisories/GHSA-f577-qrjj-4474","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-f577-qrjj-4474","identifiers":["GHSA-f577-qrjj-4474","CVE-2026-47673"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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