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    CVE-2021-47735

    CMSimple 5.4 contains an authenticated remote code execution vulnerability that allows logged-in attackers to inject malicious PHP code into template files. Attackers can exploit the template editing functionality by crafting a reverse shell payload and saving it through the template editing endpoint with a valid CSRF token.

    Published:Dec 23, 2025
    Last Modified:Mar 5, 2026
    EPS:Dec 23, 2025
    EPSS Score:0.00381
    CVSS Score:8.8

    Affected Products

    Vendor
    Cmsimple
    Product
    Cmsimple

    Exploits

    https://www.exploit-db.com/exploits/50356

    Related CVEs

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    CVE-2021-47732 (CVSS 5.1) — CMSimple 5.2 contains a stored cross-site scripting vulnerability in the Filebrowser External input field that…
    CVE-2024-58280 (CVSS 8.6) — CMSimple 5.15 contains a remote command execution vulnerability that allows authenticated attackers to modify …
    CVE-2024-57548 (CVSS 9.1) — CMSimple 5.16 allows the user to edit log.php file via print page.…
    CVE-2024-57547 (CVSS 7.5) — Insecure Permissions vulnerability in CMSimple v.5.16 allows a remote attacker to obtain sensitive information…
    CVE-2024-57546 (CVSS 7.5) — An issue in CMSimple v.5.16 allows a remote attacker to obtain sensitive information via a crafted script to t…
    CVE-2024-57549 (CVSS 7.5) — CMSimple 5.16 allows the user to read cms source code through manipulation of the file name in the file parame…
    CVE-2024-33424 (CVSS 6.1) — A cross-site scripting (XSS) vulnerability in the Settings menu of CMSimple v5.15 allows attackers to execute …
    CVE-2024-33423 (CVSS 7.4) — Cross-Site Scripting (XSS) vulnerability in the Settings menu of CMSimple v5.15 allows attackers to execute ar…

    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