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    CVE-2026-28495

    GetSimple CMS is a content management system. The massiveAdmin plugin (v6.0.3) bundled with GetSimpleCMS-CE v3.3.22 allows an authenticated administrator to overwrite the gsconfig.php configuration file with arbitrary PHP code via the gsconfig editor module. The form lacks CSRF protection, enabling a remote unauthenticated attacker to exploit this via Cross-Site Request Forgery against a logged-in admin, achieving Remote Code Execution (RCE) on the web server.

    Published:Mar 10, 2026
    Last Modified:Apr 16, 2026
    EPS:Mar 10, 2026
    EPSS Score:0.00072
    CVSS Score:9.7

    Affected Products

    Vendor
    Getsimple-ce
    Product
    Getsimple Cms

    Exploits

    https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-92wv-q2jp-qg88

    Related CVEs

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    CVE-2021-47870 (CVSS 4.8) — GetSimple CMS My SMTP Contact Plugin 1.1.2 suffers from a Stored Cross-Site Scripting (XSS) vulnerability. The…
    CVE-2021-47860 (CVSS 8.5) — GetSimple CMS Custom JS 0.1 plugin contains a cross-site request forgery vulnerability that allows unauthentic…
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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