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CVE-2020-25698

Improper Access Control in moodle

7.5 HighFix available

Users' enrollment capabilities were not being sufficiently checked in Moodle when they are restored into an existing course. This could lead to them unenrolling users without having permission to do so. Versions affected: 3.5 to 3.5.14, 3.7 to 3.7.8, 3.8 to 3.8.5, 3.9 to 3.9.2 and earlier unsupported versions. Fixed in 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

1.92%Up 0.9 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

Users' enrollment capabilities were not being sufficiently checked in Moodle when they are restored into an existing course. This could lead to them unenrolling users without having permission to do so. Versions affected: 3.5 to 3.5.14, 3.7 to 3.7.8, 3.8 to 3.8.5, 3.9 to 3.9.2 and earlier unsupported versions. Fixed in 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.

Record
CVE-2020-25698
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:P/A:N
Weakness
CWE-284
Updated
2026-11-02
CVE List No score

Users' enrollment capabilities were not being sufficiently checked in Moodle when they are restored into an existing course. This could lead to them unenrolling users without having permission to do so. Versions affected: 3.5 to 3.5.14, 3.7 to 3.7.8, 3.8 to 3.8.5, 3.9 to 3.9.2 and earlier unsupported versions. Fixed in 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.

Record
CVE-2020-25698
Weakness
CWE-284
Updated
2026-11-02
EUVDEUVD-2021-0714 No score

Users' enrollment capabilities were not being sufficiently checked in Moodle when they are restored into an existing course. This could lead to them unenrolling users without having permission to do so. Versions affected: 3.5 to 3.5.14, 3.7 to 3.7.8, 3.8 to 3.8.5, 3.9 to 3.9.2 and earlier unsupported versions. Fixed in 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.

Record
EUVD-2021-0714
Updated
2026-11-03
GitHub AdvisoriesGHSA-vxhx-gmhm-623c 7.5

Improper Access Control in moodle

Users' enrollment capabilities were not being sufficiently checked in Moodle when they are restored into an existing course. This could lead to them unenrolling users without having permission to do so. Versions affected: 3.5 to 3.5.14, 3.7 to 3.7.8, 3.8 to 3.8.5, 3.9 to 3.9.2 and earlier unsupported versions. Fixed in 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.

Record
GHSA-vxhx-gmhm-623c
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-284
Updated
2026-11-02
OSV 7.5

Users' enrollment capabilities were not being sufficiently checked in Moodle when they are restored into an existing course. This could lead to them unenrolling users without having permission to do so. Versions affected: 3.5 to 3.5.14, 3.7 to 3.7.8, 3.8 to 3.8.5, 3.9 to 3.9.2 and earlier unsupported versions. Fixed in 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.

Record
CVE-2020-25698
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVGHSA-vxhx-gmhm-623c 7.5

Improper Access Control in moodle

Users' enrollment capabilities were not being sufficiently checked in Moodle when they are restored into an existing course. This could lead to them unenrolling users without having permission to do so. Versions affected: 3.5 to 3.5.14, 3.7 to 3.7.8, 3.8 to 3.8.5, 3.9 to 3.9.2 and earlier unsupported versions. Fixed in 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.

Record
GHSA-vxhx-gmhm-623c
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-284
Updated
2026-11-02
OSVUBUNTU-CVE-2020-25698 7.5

Users' enrollment capabilities were not being sufficiently checked in Moodle when they are restored into an existing course. This could lead to them unenrolling users without having permission to do so. Versions affected: 3.5 to 3.5.14, 3.7 to 3.7.8, 3.8 to 3.8.5, 3.9 to 3.9.2 and earlier unsupported versions. Fixed in 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.

Record
UBUNTU-CVE-2020-25698
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVBIT-moodle-2020-25698 No score

Users' enrollment capabilities were not being sufficiently checked in Moodle when they are restored into an existing course. This could lead to them unenrolling users without having permission to do so. Versions affected: 3.5 to 3.5.14, 3.7 to 3.7.8, 3.8 to 3.8.5, 3.9 to 3.9.2 and earlier unsupported versions. Fixed in 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.

Record
BIT-moodle-2020-25698
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
moodle/moodle
Packagist
3.9.0 up to 3.9.3
3.9.3
moodle/moodle
Packagist
3.8.0 up to 3.8.6
3.8.6
moodle/moodle
Packagist
3.7.0 up to 3.7.9
3.7.9
moodle/moodle
Packagist
3.5 up to 3.5.15
3.5.15
moodle
Bitnami
3.5.0 up to 3.5.15, 3.7.0 up to 3.7.9, 3.8.0 up to 3.8.6, 3.9.0 up to 3.9.3
3.5.153.7.93.8.63.9.3
moodle/moodle
Packagist
3.9.0 up to 3.9.3, plus listed versions
v3.9.0v3.9.1v3.9.2
3.9.3
moodle/moodle
Packagist
3.8.0 up to 3.8.6, plus listed versions
v3.8.0v3.8.1v3.8.2v3.8.3v3.8.4v3.8.5
3.8.6
moodle/moodle
Packagist
3.7.0 up to 3.7.9, plus listed versions
v3.7.0v3.7.1v3.7.2v3.7.3v3.7.4
Show 4 moreShow less
v3.7.5v3.7.6v3.7.7v3.7.8
3.7.9
moodle/moodle
Packagist
3.5 up to 3.5.15, plus listed versions
v3.5.0v3.5.0-betav3.5.0-rc1v3.5.1v3.5.10
Show 12 moreShow less
v3.5.11v3.5.12v3.5.13v3.5.14v3.5.2v3.5.3v3.5.4v3.5.5v3.5.6v3.5.7v3.5.8v3.5.9
3.5.15
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
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2020-25698 is a high vulnerability (CVSS 7.5) in Moodle, published November 19, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.92%, the 80th percentile. Fixed in moodle/moodle 3.9.3.

References

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