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    CVE-2026-29045

    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:Mar 4, 2026
    Last Modified:Apr 17, 2026
    EPS:Mar 4, 2026
    EPSS Score:0.00048
    CVSS Score:7.5

    Affected Products

    Vendor
    Hono
    Product
    Hono

    Exploits

    No exploit reference

    Related CVEs

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    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, …
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    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