CVE-2022-0334Network attack vector

Grade disclosure via missing capability check

Published Jan 25, 2022 · Updated Aug 2, 2024

Authorization bypass in Moodle LMS allows remote authenticated users to read restricted course grade reports over the web. The grade overview builds direct course-report links without matching endpoint authorization, and course/user.php omits the required grade-report capability check. A logged-in user without gradereport/user:view can expose only that user's grades in affected releases 3.11 through 3.11.4, 3.10 through 3.10.8, 3.9 through 3.9.11, and earlier unsupported versions.

CVSS severity4.3
Medium
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Moodle LMS allows remote authenticated users to read restricted course grade reports over the web. The grade overview builds direct course-report links without matching endpoint authorization, and course/user.php omits the required grade-report capability check. A logged-in user without gradereport/user:view can expose only that user's grades in affected releases 3.11 through 3.11.4, 3.10 through 3.10.8, 3.9 through 3.9.11, and earlier unsupported versions.

The record

CVE
CVE-2022-0334
Published
Jan 25, 2022
Updated
Aug 2, 2024
Vendor
Moodle
Product
Moodle LMS
Classifications
CWE-863, CWE-668, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=moodle 3.11.5, moodle 3.10.9 and moodle 3.9.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Moodle · Moodle LMSversion=moodle 3.11.5, moodle 3.10.9 and moodle 3.9.12

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/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-863Incorrect Authorization
CWE-668Exposure of Resource to Wrong Sphere
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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