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CVE-2023-5551

Moodle: forum summary report shows students from other groups when in separate groups mode

3.3 LowFix available

Separate Groups mode restrictions were not honoured in the forum summary report, which would display users from other groups.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
None

Exploit likelihood

0.29%Up 0.2 points since Nov 10, 2023
90%50%10%1%

What each source reports

CVE List Score used 3.3

Moodle: forum summary report shows students from other groups when in separate groups mode

Separate Groups mode restrictions were not honoured in the forum summary report, which would display users from other groups.

Record
CVE-2023-5551
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weakness
CWE-200
Updated
2026-11-02
EUVDEUVD-2023-2994 3.3

Separate Groups mode restrictions were not honoured in the forum summary report, which would display users from other groups.

Record
EUVD-2023-2994
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-jr83-8x65-xcr5 3.3

Moodle Exposure of Sensitive Information to an Unauthorized Actor vulnerability

Separate Groups mode restrictions were not honoured in the forum summary report, which would display users from other groups.

Record
GHSA-jr83-8x65-xcr5
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
NVD 3.3

Separate Groups mode restrictions were not honoured in the forum summary report, which would display users from other groups.

Record
CVE-2023-5551
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
OSV 3.3

Moodle: forum summary report shows students from other groups when in separate groups mode

Separate Groups mode restrictions were not honoured in the forum summary report, which would display users from other groups.

Record
CVE-2023-5551
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weakness
CWE-200
Updated
2026-11-02
OSVGHSA-jr83-8x65-xcr5 3.3

Moodle Exposure of Sensitive Information to an Unauthorized Actor vulnerability

Separate Groups mode restrictions were not honoured in the forum summary report, which would display users from other groups.

Record
GHSA-jr83-8x65-xcr5
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
OSVUBUNTU-CVE-2023-5551 3.3

Separate Groups mode restrictions were not honoured in the forum summary report, which would display users from other groups.

Record
UBUNTU-CVE-2023-5551
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVBIT-moodle-2023-5551 No score

Moodle: forum summary report shows students from other groups when in separate groups mode

Separate Groups mode restrictions were not honoured in the forum summary report, which would display users from other groups.

Record
BIT-moodle-2023-5551
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
moodle/moodle
Packagist
 4.3.0-beta up to 4.3.0-rc2
4.3.0-rc2
moodle/moodle
Packagist
 4.2.0 up to 4.2.3
4.2.3
moodle/moodle
Packagist
 4.1.0 up to 4.1.6
4.1.6
moodle/moodle
Packagist
 4.0.0 up to 4.0.11
4.0.11
moodle/moodle
Packagist
 3.10.0 up to 3.11.17
3.11.17
moodle/moodle
Packagist
 before 3.9.24
3.9.24
moodle
Bitnami
 before 3.9.24, 3.11.0 up to 3.11.17, 4.0.0 up to 4.0.11, 4.1.0 up to 4.1.6, 4.2.0 up to 4.2.3
3.9.243.11.174.0.114.1.64.2.3
moodle/moodle
Packagist
 4.3.0-beta up to 4.3.0-rc2, plus listed versions
v4.3.0-betav4.3.0-rc1
4.3.0-rc2
moodle/moodle
Packagist
 4.2.0 up to 4.2.3, plus listed versions
v4.2.0v4.2.1v4.2.2
4.2.3
moodle/moodle
Packagist
 4.1.0 up to 4.1.6, plus listed versions
v4.1.0v4.1.1v4.1.2v4.1.3v4.1.4v4.1.5
4.1.6
Show 5 moreShow less
Affected packages
PackageAffectedFixed
moodle/moodle
Packagist
 4.0.0 up to 4.0.11, plus listed versions
v4.0.0v4.0.1v4.0.10v4.0.2v4.0.3
Show 6 moreShow less
v4.0.4v4.0.5v4.0.6v4.0.7v4.0.8v4.0.9
4.0.11
moodle/moodle
Packagist
 3.10.0 up to 3.11.17, plus listed versions
v3.10.0v3.10.1v3.10.10v3.10.11v3.10.2
Show 27 moreShow less
v3.10.3v3.10.4v3.10.5v3.10.6v3.10.7v3.10.8v3.10.9v3.11.0v3.11.0-betav3.11.0-rc1v3.11.0-rc2v3.11.1v3.11.10v3.11.11v3.11.12v3.11.13v3.11.14v3.11.15v3.11.16v3.11.2v3.11.3v3.11.4v3.11.5v3.11.6v3.11.7v3.11.8v3.11.9
3.11.17
moodle/moodle
Packagist
 before 3.9.24, 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
3.9.24
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
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2023-5551 is a low vulnerability (CVSS 3.3) in Moodle, published November 9, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 21st percentile. Fixed in moodle/moodle 4.3.0-rc2.

References

Show 7 moreShow less
This page doesn't list everything

Left out here: 221 versions. The JSON record has them.

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