CVE-2021-20279

lowpriority · track · 22EPSS 0.010 · 63 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.00% (63rd) EPSS

CVSS 3.5 · low

Is it mine?

15 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

The ID number user profile field required additional sanitizing to prevent a stored XSS risk 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.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.5–5.4

v2.03.5lowAV:N/AC:M/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 6.8 · impact 2.9

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 2.7

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nsecondary · OSV

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79US

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/moodle3.10 → 3.10.2osvUSpkg:composer/moodle/moodle
Packagist moodle/moodle3.5 → 3.5.17osvUSpkg:composer/moodle/moodle
Packagist moodle/moodle3.8 → 3.8.8osvUSpkg:composer/moodle/moodle
Packagist moodle/moodle3.9 → 3.9.5osvUSpkg:composer/moodle/moodle

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-h7h6-fwpv-ggvxMoodle contains Stored XSS via ID number user profile field2022-05-24ghsa · osvUS
The ID number user profile field required additional sanitizing to prevent a stored XSS risk in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.
BIT-moodle-2021-202792024-03-06vendor · osvUS
The ID number user profile field required additional sanitizing to prevent a stored XSS risk 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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+53016 more

references (15)

External citations — patches, advisories, analysis.

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