CVE-2021-20283

mediumpriority · track · 17OT risk · elevatedEPSS 0.011 · 66 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.11% (66th) EPSS

CVSS 4 · medium

Is it mine?

15 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

The web service responsible for fetching other users' enrolled courses did not validate that the requesting user had permission to view that information in each course in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.

cvss

Technical severity, 0–10. One row per scoring source.

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · OSV

v3.14mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-862USprimaryCWE-862USCWE-863USCWE-863US

affected products (15)

Products and version ranges known to be affected.

n/a Moodle≤ Fixed in 3.10.2, 3.9.5, 3.8.8, 3.5.17enisa_euvdEU
fedoraproject fedora= 32nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
fedoraproject fedora= 34nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
moodle moodle3.10.0 → 3.10.2nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle3.5.0 → 3.5.17nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle3.8.0 → 3.8.8nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle3.9.0 → 3.9.5nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
Bitnami moodle3.10.0 → 3.10.2osvUSpkg:bitnami/moodle
Bitnami moodle3.5.0 → 3.5.17osvUSpkg:bitnami/moodle
Bitnami moodle3.8.0 → 3.8.8osvUSpkg:bitnami/moodle
Bitnami moodle3.9.0 → 3.9.5osvUSpkg:bitnami/moodle
Packagist moodle/moodle< 3.5.17osvUSpkg:composer/moodle/moodle
Packagist moodle/moodle3.10.0 → 3.10.2osvUSpkg:composer/moodle/moodle
Packagist moodle/moodle3.8.0 → 3.8.8osvUSpkg:composer/moodle/moodle
Packagist moodle/moodle3.9.0 → 3.9.5osvUSpkg:composer/moodle/moodle

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-2m72-m5cw-3g9hMissing permission check in Moodle2022-05-24ghsa · osvUS
The web service responsible for fetching other users' enrolled courses did not validate that the requesting user had permission to view that information in each course in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.
BIT-moodle-2021-202832024-03-06vendor · osvUS
The web service responsible for fetching other users' enrolled courses did not validate that the requesting user had permission to view that information in each course in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2021-03-15modified 2026-06-17

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+11476 more

references (15)

External citations — patches, advisories, analysis.

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