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CVE-2023-28331

Moodle: xss risk when outputting database activity filter data

6.1 MediumFix available

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS 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
Low
Integrity
Low
Availability
None

Exploit likelihood

0.66%Up 0.6 points since Mar 24, 2023
90%50%10%1%

What each source reports

NVD Score used 6.1

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS risk.

Record
CVE-2023-28331
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
CVE List 6.1

Moodle: xss risk when outputting database activity filter data

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS risk.

Record
CVE-2023-28331
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2023-0917 6.1

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS risk.

Record
EUVD-2023-0917
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-77jm-f3vj-xvx2 6.1

Moodle vulnerable to Cross-site Scripting

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS risk.

Record
GHSA-77jm-f3vj-xvx2
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 6.1

Moodle: xss risk when outputting database activity filter data

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS risk.

Record
CVE-2023-28331
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVGHSA-77jm-f3vj-xvx2 6.1

Moodle vulnerable to Cross-site Scripting

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS risk.

Record
GHSA-77jm-f3vj-xvx2
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVUBUNTU-CVE-2023-28331 6.1

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS risk.

Record
UBUNTU-CVE-2023-28331
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
OSVBIT-moodle-2023-28331 No score

Moodle: xss risk when outputting database activity filter data

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS risk.

Record
BIT-moodle-2023-28331
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
moodle/moodle
Packagist
 4.1.0 up to 4.1.2
4.1.2
moodle/moodle
Packagist
 4.0.0 up to 4.0.7
4.0.7
moodle/moodle
Packagist
 3.11.0 up to 3.11.13
3.11.13
moodle/moodle
Packagist
 before 3.9.20
3.9.20
moodle
Bitnami
 3.9.0 up to 3.9.20, 3.11.0 up to 3.11.13, 4.0.0 up to 4.0.7, 4.1.0 up to 4.1.2
3.9.203.11.134.0.74.1.2
moodle/moodle
Packagist
 4.1.0 up to 4.1.2, plus listed versions
v4.1.0v4.1.1
4.1.2
moodle/moodle
Packagist
 4.0.0 up to 4.0.7, plus listed versions
v4.0.0v4.0.1v4.0.2v4.0.3v4.0.4v4.0.5v4.0.6
4.0.7
moodle/moodle
Packagist
 3.11.0 up to 3.11.13, plus listed versions
v3.11.0v3.11.1v3.11.10v3.11.11v3.11.12
Show 8 moreShow less
v3.11.2v3.11.3v3.11.4v3.11.5v3.11.6v3.11.7v3.11.8v3.11.9
3.11.13
moodle/moodle
Packagist
 before 3.9.20, plus listed versions
v2.3.10v2.3.11v2.3.4v2.3.5v2.3.6
Show 45 moreShow less
v2.3.7v2.3.8v2.3.9v2.4.0v2.4.0-rc1v2.4.1v2.4.10v2.4.11v2.4.2v2.4.3v2.4.4v2.4.5v2.4.6v2.4.7v2.4.8v2.4.9v2.5.0v2.5.0-betav2.5.0-rc1v2.5.1v2.5.2v2.5.3v2.5.4v2.5.5v2.5.6v2.5.7v2.5.8v2.5.9v2.6.0v2.6.0-betav2.6.0-rc1v2.6.1v2.6.10v2.6.11v2.6.2v2.6.3v2.6.4v2.6.5v2.6.6v2.6.7v2.6.8v2.6.9v2.7.0v2.7.0-betav2.7.0-rc1
3.9.20
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
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

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

In short

CVE-2023-28331 is a medium vulnerability (CVSS 6.1) in Moodle, published March 23, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.66%, the 52nd percentile. Fixed in moodle/moodle 4.1.2.

References

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Left out here: 217 versions. The JSON record has them.

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