CVE-2017-12157

Moodle sensitive information disclosure

4.3 MediumFix available

In Moodle 3.x, various course reports allow teachers to view details about users in the groups they can't access.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

1.10%Up 0.5 points since Apr 14, 2021

What each source reports

NVD Score used 4.3

In Moodle 3.x, various course reports allow teachers to view details about users in the groups they can't access.

Record: CVE-2017-12157
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0: 4.0 MediumAV:N/AC:L/Au:S/C:P/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

CVE List No score

In Moodle 3.x, various course reports allow teachers to view details about users in the groups they can't access.

Record: CVE-2017-12157
Updated: 2026-11-02

EUVDEUVD-2022-4025 No score

In Moodle 3.x, various course reports allow teachers to view details about users in the groups they can't access.

Record: EUVD-2022-4025
Updated: 2026-11-03

GitHub AdvisoriesGHSA-gw95-48xq-gqf9 4.3

Moodle sensitive information disclosure

In Moodle 3.x, various course reports allow teachers to view details about users in the groups they can't access.

Record: GHSA-gw95-48xq-gqf9
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

OSV 4.3

In Moodle 3.x, various course reports allow teachers to view details about users in the groups they can't access.

Record: CVE-2017-12157
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

OSVGHSA-gw95-48xq-gqf9 4.3

Moodle sensitive information disclosure

In Moodle 3.x, various course reports allow teachers to view details about users in the groups they can't access.

Record: GHSA-gw95-48xq-gqf9
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

OSVUBUNTU-CVE-2017-12157 4.3

In Moodle 3.x, various course reports allow teachers to view details about users in the groups they can't access.

Record: UBUNTU-CVE-2017-12157
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

Affected products

moodle

Affected packages

Affected packages
Package	Affected	Fixed
`moodle/moodle` Packagist	3.3.0 to 3.3.1	3.3.2
`moodle/moodle` Packagist	3.2.0 to 3.2.4	3.2.5
`moodle/moodle` Packagist	through 3.1.7	3.1.8
`moodle/moodle` Packagist	3.3.0 up to 3.3.2, plus listed versions v3.3.0v3.3.1	3.3.2
`moodle/moodle` Packagist	3.2.0 up to 3.2.5, plus listed versions v3.2.0v3.2.1v3.2.2v3.2.3v3.2.4	3.2.5
`moodle/moodle` Packagist	before 3.1.8, 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	3.1.8
`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
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2017-12157 is a medium vulnerability (CVSS 4.3) in Moodle, published September 18, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.10%, the 65th percentile. Fixed in moodle/moodle 3.3.2.

References

This page doesn't list everything

Left out here: 77 versions. The JSON record has them.