CVE-2022-40316Network attack vector

Cross-group attempt disclosure via missing report filtering

Published Sep 30, 2022 · Updated May 20, 2025

Missing authorization in Moodle LMS allows remote authenticated users to read other groups' H5P activity attempt and user data. The H5P activity attempts report retrieves attempts and user details without applying the course's separate-groups filter. A non-editing teacher with mod/h5pactivity:reviewattempts access can cross group boundaries on affected 4.0 through 4.0.3, 3.11 through 3.11.9, and 3.9 through 3.9.16 installations.

CVSS severity4.3
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Moodle LMS allows remote authenticated users to read other groups' H5P activity attempt and user data. The H5P activity attempts report retrieves attempts and user details without applying the course's separate-groups filter. A non-editing teacher with mod/h5pactivity:reviewattempts access can cross group boundaries on affected 4.0 through 4.0.3, 3.11 through 3.11.9, and 3.9 through 3.9.16 installations.

The record

CVE
CVE-2022-40316
Published
Sep 30, 2022
Updated
May 20, 2025
Vendor
Moodle
Product
Moodle LMS
Classifications
CWE-862, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 30, 2022CVE publishedPublication date reported by the CVE source.
  2. May 20, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0 to 4.0.3, 3.11 to 3.11.9, 3.9 to 3.9.16 and earlier unsupported versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Moodle · Moodle LMSversion=4.0 to 4.0.3, 3.11 to 3.11.9, 3.9 to 3.9.16 and earlier unsupported versions

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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