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    CVE-2021-40555

    Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2.15 allows attackers to execute arbitrary code via description field on the new page creation form.

    Published:Feb 16, 2023
    Last Modified:Mar 19, 2025
    EPS:Feb 16, 2023
    EPSS Score:0.0008
    CVSS Score:5.4

    Affected Products

    Vendor
    Flatcore
    Product
    Flatcore

    Exploits

    https://github.com/flatCore/flatCore-CMS/issues/56https://github.com/flatCore/flatCore-CMS/issues/56

    Related CVEs

    CVE-2021-23838 (CVSS 4.8) — An issue was discovered in flatCore before 2.0.0 build 139. A reflected XSS vulnerability was identified in th…
    CVE-2021-23837 (CVSS 6.5) — An issue was discovered in flatCore before 2.0.0 build 139. A time-based blind SQL injection was identified in…
    CVE-2021-23836 (CVSS 4.8) — An issue was discovered in flatCore before 2.0.0 build 139. A stored XSS vulnerability was identified in the p…
    CVE-2021-23835 (CVSS 4.9) — An issue was discovered in flatCore before 2.0.0 build 139. A local file disclosure vulnerability was identifi…
    CVE-2020-17451 (CVSS 4.8) — flatCore before 1.5.7 allows XSS by an admin via the acp/acp.php?tn=pages&sub=edit&editpage=1 page_linkname, p…
    CVE-2020-17452 (CVSS 7.2) — flatCore before 1.5.7 allows upload and execution of a .php file by an admin.…
    CVE-2019-13961 (CVSS 8.8) — A CSRF vulnerability was found in flatCore before 1.5, leading to the upload of arbitrary .php files via acp/c…
    CVE-2019-10652 (CVSS 7.2) — An issue was discovered in flatCore 1.4.7. acp/acp.php allows remote authenticated administrators to upload ar…
    CVE-2017-9451 (CVSS 6.1) — Cross site scripting (XSS) vulnerability in pages.edit_form.php in flatCore 1.4.6 allows remote attackers to i…

    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