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    CVE-2026-21861

    baserCMS is a website development framework. Prior to version 5.2.3, baserCMS contains an OS command injection vulnerability in the core update functionality. An authenticated administrator can execute arbitrary OS commands on the server due to improper handling of user-controlled input that is directly passed to exec() without sufficient validation or escaping. This issue has been patched in version 5.2.3.

    Published:Mar 31, 2026
    Last Modified:Apr 3, 2026
    EPS:Mar 31, 2026
    EPSS Score:0.00263
    CVSS Score:9.1

    Affected Products

    Vendor
    Basercms
    Product
    Basercms
    Vendor
    Baserproject
    Product
    Basercms

    Exploits

    https://github.com/baserproject/basercms/security/advisories/GHSA-qxmc-6f24-g86ghttps://github.com/baserproject/basercms/security/advisories/GHSA-qxmc-6f24-g86g

    Related CVEs

    CVE-2026-32734 (CVSS 7.1) — baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has DOM-based cross-site scripti…
    CVE-2026-30879 (CVSS 6.9) — baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a cross-site scripting vulne…
    CVE-2026-30940 (CVSS 7.2) — baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in …
    CVE-2026-30878 (CVSS 5.3) — baserCMS is a website development framework. Prior to version 5.2.3, a public mail submission API allows unaut…
    CVE-2026-30877 (CVSS 9.1) — baserCMS is a website development framework. Prior to version 5.2.3, there is an OS command injection vulnerab…
    CVE-2026-30880 (CVSS 9.2) — baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has an OS command injection vuln…
    CVE-2026-27697 (CVSS 6.9) — baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a SQL injection vulnerabilit…
    CVE-2025-32957 (CVSS 8.7) — baserCMS is a website development framework. Prior to version 5.2.3, the application's restore function allows…
    CVE-2024-46998 (CVSS 7.1) — baserCMS is a website development framework. Versions prior to 5.1.2 have a cross-site scripting vulnerability…
    CVE-2024-46996 (CVSS 6.3) — baserCMS is a website development framework. Versions prior to 5.1.2 have a cross-site scripting vulnerability…

    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