Moodle Mod Customcert

1 CVEs product

Monthly

CVE-2026-30884 CRITICAL Act Now

Cross-course privilege escalation in Moodle Mod Customcert allows authenticated teachers with certificate management rights in any course to read and modify certificate data across the entire Moodle installation due to missing context validation in the editelement callback and save_element web service. An attacker with mod/customcert:manage permissions in a single course can exploit this to disclose sensitive certificate information from other courses or tamper with their certificate elements. Versions 4.4.9 and 5.0.3 patch the vulnerability, but no patch is currently available for affected versions.

Information Disclosure Authentication Bypass Moodle Mod Customcert Moodle
NVD GitHub VulDB
CVSS 3.1
9.6
EPSS
0.0%
CVE-2026-30884
EPSS 0% CVSS 9.6
CRITICAL Act Now

Cross-course privilege escalation in Moodle Mod Customcert allows authenticated teachers with certificate management rights in any course to read and modify certificate data across the entire Moodle installation due to missing context validation in the editelement callback and save_element web service. An attacker with mod/customcert:manage permissions in a single course can exploit this to disclose sensitive certificate information from other courses or tamper with their certificate elements. Versions 4.4.9 and 5.0.3 patch the vulnerability, but no patch is currently available for affected versions.

Information Disclosure Authentication Bypass Moodle Mod Customcert +1
NVD GitHub VulDB

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