CVE-2026-47673 — Hono: JWT middleware accepts any Authorization scheme, not only Bearer
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 v…
Published: 2026-05-28 · CVSS: 4.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7