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    CVE-2026-24398

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, IP Restriction Middleware in Hono is vulnerable to an IP address validation bypass. The `IPV4_REGEX` pattern and `convertIPv4ToBinary` function in `src/utils/ipaddr.ts` do not properly validate that IPv4 octet values are within the valid range of 0-255, allowing attackers to craft malformed IP addresses that bypass IP-based access controls. Version 4.11.7 contains a patch for the issue.

    Published:Jan 27, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 27, 2026
    EPSS Score:0.00014
    CVSS Score:4.8

    Affected Products

    Vendor
    Hono
    Product
    Hono

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-185 Incorrect Regular Expression

    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