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    CVE-2026-22781

    TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. TinyWeb HTTP Server before version 1.98 is vulnerable to OS command injection via CGI ISINDEX-style query parameters. The query parameters are passed as command-line arguments to the CGI executable via Windows CreateProcess(). An unauthenticated remote attacker can execute arbitrary commands on the server by injecting Windows shell metacharacters into HTTP requests. This vulnerability is fixed in 1.98.

    Published:Jan 12, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 12, 2026
    EPSS Score:0.00584
    CVSS Score:9.8

    Affected Products

    Vendor
    Maximmasiutin
    Product
    Tinyweb
    Vendor
    Ritlabs
    Product
    Tinyweb

    Exploits

    No exploit reference

    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