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    CVE-2026-47673

    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.

    Published:May 28, 2026
    Last Modified:May 30, 2026
    EPS:May 28, 2026
    EPSS Score:0.00027
    CVSS Score:4.8

    Affected Products

    Vendor
    Hono
    Product
    Hono

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-285 Improper Authorization

    Related CVEs

    CVE-2026-84365 (CVSS 6.5) — Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.12 until 4.13.…
    CVE-2026-84364 (CVSS 5.3) — Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.13.5, when pa…
    CVE-2026-84363 (CVSS 5.9) — Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.13.5, Hono's …
    CVE-2026-69207 (CVSS 5.3) — Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.34, the bu…
    CVE-2026-71850 (CVSS 4.8) — Hono is a Web application framework that provides support for any JavaScript runtime. From 3.8.0 to 4.12.33, m…
    CVE-2026-71849 (CVSS 3.7) — Hono is a Web application framework that provides support for any JavaScript runtime. From 4.7.0 to 4.12.33, t…
    CVE-2026-71848 (CVSS 5.3) — Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.0 to 4.12.33, …
    CVE-2026-56764 (CVSS 6.3) — Hono before 4.11.10 contains a timing attack vulnerability in the basicAuth and bearerAuth middlewares due to …
    CVE-2026-56763 (CVSS 6.3) — Hono before 4.12.7 allows __proto__ key in parseBody with dot option enabled, permitting specially crafted for…
    CVE-2026-59895 (CVSS 6.1) — Hono is a Web application framework that provides support for any JavaScript runtime. From 4.0.0 before 4.12.2…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High