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    1 vulnerability by mdjnelson

    CVE-2026-30884 (GCVE-0-2026-30884)

    Vulnerability from cvelistv5 – Published: 2026-03-18 02:26 – Updated: 2026-03-18 19:17
    VLAI
    Title
    mdjnelson/moodle-mod_customcert Vulnerable to Authorization Bypass Through User-Controlled Key
    Summary
    mdjnelson/moodle-mod_customcert is a Moodle plugin for creating dynamically generated certificates with complete customization via the web browser. Prior to versions 4.4.9 and 5.0.3, a teacher who holds `mod/customcert:manage` in any single course can read and silently overwrite certificate elements belonging to any other course in the Moodle installation. The `core_get_fragment` callback `editelement` and the `mod_customcert_save_element` web service both fail to verify that the supplied `elementid` belongs to the authorized context, enabling cross-course information disclosure and data tampering. Versions 4.4.9 and 5.0.3 fix the issue.
    Severity
    9.6 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    References
    Impacted products
    Vendor Product Version
    mdjnelson moodle-mod_customcert Affected: < 4.4.9
    Affected: >= 5.0.0, < 5.0.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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                "id": "CVE-2026-30884",
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                "timestamp": "2026-03-18T19:13:43.965152Z",
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