CVE-2026-30884

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Source
https://cve.org/CVERecord?id=CVE-2026-30884
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30884.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-30884
Aliases
  • GHSA-8pjr-j7r4-ccjx
Published
2026-03-18T02:26:30.420Z
Modified
2026-04-10T05:42:37.302648Z
Severity
  • 9.6 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N CVSS Calculator
Summary
mdjnelson/moodle-mod_customcert Vulnerable to Authorization Bypass Through User-Controlled Key
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-639"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30884.json"
}
References

Affected packages

Git / github.com/mdjnelson/moodle-mod_customcert

Affected ranges

Type
GIT
Repo
https://github.com/mdjnelson/moodle-mod_customcert
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
74b972034ecac6f1bd106b27d06c5e24b8a7f8c1
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.4.9"
        }
    ]
}
Type
GIT
Repo
https://github.com/mdjnelson/moodle-mod_customcert
Events
Introduced
8484023762a14c5602b5db9cef6401aba95077e4
Fixed
e0388cecce8810d1a6121da4ec4a475b49a760ee
Database specific 
{
    "versions": [
        {
            "introduced": "5.0.0"
        },
        {
            "fixed": "5.0.3"
        }
    ]
}

Affected versions

v3.*
v3.10.0
v3.11.0
v3.11.1
v3.3.2
v3.3.3
v3.3.4
v3.3.5
v3.3.6
v3.3.7
v3.3.8
v3.3.9
v3.4.0
v3.4.1
v3.5.0
v3.5.1
v3.5.2
v3.5.3
v3.5.4
v3.5.5
v3.6.0
v3.6.1
v3.6.2
v3.7.0
v3.7.1
v3.8.0
v3.8.1
v3.8.2
v3.8.3
v3.8.4
v3.8.5
v3.9.0
v4.*
v4.0
v4.0.1
v4.0.2
v4.0.3
v4.2.0
v4.2.1
v4.2.2
v4.2.3
v4.2.4
v4.2.5
v4.4.0
v4.4.1
v4.4.2
v4.4.3
v4.4.4
v4.4.5
v4.4.6
v4.4.7
v4.4.8
v5.*
v5.0.0
v5.0.1
v5.0.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30884.json"