Every CVESearch/Get API key

CVE-2021-43559

Moodle contains CSRF vulnerability

8.8 HighFix available

A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The "delete related badge" functionality did not include the necessary token check to prevent a CSRF risk.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.62%Unchanged since Nov 23, 2021
90%50%10%1%

What each source reports

NVD Score used8.8

A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The "delete related badge" functionality did not include the necessary token check to prevent a CSRF risk.

Record
CVE-2021-43559
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-352
Updated
2026-11-02
CVE ListNo score

A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The "delete related badge" functionality did not include the necessary token check to prevent a CSRF risk.

Record
CVE-2021-43559
Weakness
CWE-352
Updated
2026-11-02
EUVDEUVD-2022-2204No score

A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The "delete related badge" functionality did not include the necessary token check to prevent a CSRF risk.

Record
EUVD-2022-2204
Updated
2026-11-03
GitHub AdvisoriesGHSA-3jrj-x6cj-97cp8.8

Moodle contains CSRF vulnerability

A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The "delete related badge" functionality did not include the necessary token check to prevent a CSRF risk.

Record
GHSA-3jrj-x6cj-97cp
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-352
Updated
2026-11-02
OSV8.8

A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The "delete related badge" functionality did not include the necessary token check to prevent a CSRF risk.

Record
CVE-2021-43559
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-3jrj-x6cj-97cp8.8

Moodle contains CSRF vulnerability

A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The "delete related badge" functionality did not include the necessary token check to prevent a CSRF risk.

Record
GHSA-3jrj-x6cj-97cp
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-352
Updated
2026-11-02
OSVUBUNTU-CVE-2021-435598.8

A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The "delete related badge" functionality did not include the necessary token check to prevent a CSRF risk.

Record
UBUNTU-CVE-2021-43559
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVBIT-moodle-2021-43559No score

A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The "delete related badge" functionality did not include the necessary token check to prevent a CSRF risk.

Record
BIT-moodle-2021-43559
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
moodle/moodle
Packagist
3.11 to 3.11.3
3.11.4
moodle/moodle
Packagist
3.10 to 3.10.7
3.10.8
moodle/moodle
Packagist
3.9 to 3.9.10
3.9.11
moodle
Bitnami
before 3.8.9, 3.9.0 up to 3.9.11, 3.10.0 up to 3.10.8, 3.11.0 up to 3.11.4
3.8.93.9.113.10.83.11.4
moodle/moodle
Packagist
3.11 up to 3.11.4, plus listed versions
v3.11.0v3.11.0-betav3.11.0-rc1v3.11.0-rc2v3.11.1v3.11.2v3.11.3
3.11.4
moodle/moodle
Packagist
3.10 up to 3.10.8, plus listed versions
v3.10.0v3.10.0-betav3.10.0-rc1v3.10.0-rc2v3.10.1
Show 6 moreShow less
v3.10.2v3.10.3v3.10.4v3.10.5v3.10.6v3.10.7
3.10.8
moodle/moodle
Packagist
3.9 up to 3.9.11, plus listed versions
v3.9.0v3.9.0-betav3.9.0-rc1v3.9.0-rc2v3.9.0-rc3
Show 10 moreShow less
v3.9.1v3.9.10v3.9.2v3.9.3v3.9.4v3.9.5v3.9.6v3.9.7v3.9.8v3.9.9
3.9.11
moodle
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
2.7.9+dfsg-12.7.10+dfsg-12.7.11+dfsg-12.7.11+dfsg-22.7.12+dfsg-13.0.3+dfsg-0ubuntu13.0.3+dfsg-0ubuntu1+esm1
None known
moodle
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
3.0.3+dfsg-0ubuntu13.0.3+dfsg-0ubuntu1+esm1
None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-43559 is a high vulnerability (CVSS 8.8) in Moodle, published November 22, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.62%, the 50th percentile. Fixed in moodle/moodle 3.11.4.

References

PagesAll vulnerabilitiesBrowseDocsSourcesGuideGet API key
MoveEnter Open