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    CVE-2026-39408

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a path traversal issue in toSSG() allows files to be written outside the configured output directory during static site generation. When using dynamic route parameters via ssgParams, specially crafted values can cause generated file paths to escape the intended output directory. This vulnerability is fixed in 4.12.12.

    Published:Apr 8, 2026
    Last Modified:Apr 21, 2026
    EPS:Apr 8, 2026
    EPSS Score:0.00011
    CVSS Score:7.5

    Affected Products

    Vendor
    Hono
    Product
    Hono

    Exploits

    https://github.com/honojs/hono/security/advisories/GHSA-xf4j-xp2r-rqqx

    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.…
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    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