CVE-2026-119555
Moodle through 5.3.0, 5.2.4, 5.1.8, 5.0.11 and 4.5.15 Information Disclosure via core_grades_get_feedback
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
Moodle 4.2.0 through 4.5.15, 5.0.0 through 5.0.11, 5.1.0 through 5.1.8, 5.2.0 through 5.2.4, and 5.3.0 contain an information disclosure vulnerability in the core_grades_get_feedback web service. The service lacks group-membership and enrolment checks, so non-editing teachers can iterate userid values to read other groups' grade feedback and users' names and identity fields such as email.
| CWE | CWE-639 |
| Vendor | moodle project |
| Product | moodle |
| Published | Oct 30, 2026 |
Stay Ahead of the Next One
Get instant alerts for moodle project moodle
Be the first to know when new medium vulnerabilities affecting moodle project moodle are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
Moodle Project / moodle
5.3.0 5.2.0 ≤ 5.2.4 5.1.0 ≤ 5.1.8 5.0.0 ≤ 5.0.11 4.2.0 ≤ 4.5.15
References
github.com: https://github.com/moodle/moodle/blob/v5.3.0/public/grade/classes/external/get_feedback.php#L77-L96 abraxaslabs.tech: https://abraxaslabs.tech/research/moodle-grades-feedback-idor github.com: https://github.com/moodle/moodle vulncheck.com: https://www.vulncheck.com/advisories/moodle-through-5.3.0-5.2.4-5.1.8-5.0.11-and-4.5.15-information-disclosure-via-core-grades-get-feedback
Credits
Abraxas Labs