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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
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
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