Categories
CVE-2026-30884

mdjnelson/moodle-mod_customcert Vulnerable to Authorization Bypass Through User-Controlled Key

Summary

mdjnelson/moodle-mod_customcert Vulnerable to Authorization Bypass Through User-Controlled Key

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

References

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