CVE-2016-2154

Moodle allows attackers to discover hidden course names

4.3 MediumFix available

CVE-2016-2154 is a medium vulnerability (CVSS 4.3) in Moodle, published March 25, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.69%, the 77th percentile. Fixed in moodle/moodle 2.8.11.

admin/tool/monitor/lib.php in Event Monitor in Moodle 2.8.x before 2.8.11, 2.9.x before 2.9.5, and 3.0.x before 3.0.3 does not consider the moodle/course:viewhiddencourses capability, which allows remote authenticated users to discover hidden course names by subscribing to a rule.

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

1.69%Up 0.6 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2016-2154
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

Record: CVE-2016-2154
Updated: 2026-11-02

EUVDEUVD-2022-3806 No score

Record: EUVD-2022-3806
Updated: 2026-11-03

GitHub AdvisoriesGHSA-fmq9-58q4-xjw5 4.3

Moodle allows attackers to discover hidden course names

Record: GHSA-fmq9-58q4-xjw5
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

Record: CVE-2016-2154
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-fmq9-58q4-xjw5 4.3

Moodle allows attackers to discover hidden course names

Record: GHSA-fmq9-58q4-xjw5
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-2016-2154 4.3

Record: UBUNTU-CVE-2016-2154
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

OSVMGASA-2016-0122 No score

Updated moodle packages fix security vulnerability

In Moodle before 2.8.11, teachers who otherwise were not supposed to see students' emails could see them in the participants list (CVE-2016-2151).

In Moodle before 2.8.11, Moodle traditionally trusted content from external DB, however it was decided that external datasources may not be aware of web security practices and data could cause problems after importing to Moodle (CVE-2016-2152).

In Moodle before 2.8.11, a user with higher permissions could be tricked into clicking a link which would result in Reflected XSS in mod_data advanced search (CVE-2016-2153).

In Moodle before 2.8.11, users without capability to view hidden courses but with capability to subscribe to Event Monitor rules could see the names of hidden courses (CVE-2016-2154).

In Moodle before 2.8.11, the Non-Editing Instructor role can edit the exclude checkbox in the Single View grade report (CVE-2016-2155).

In Moodle before 2.8.11, users without the capability to view hidden acitivites could still see associated calendar events via web services, via the external function get_calendar_events (CVE-2016-2156).

In Moodle before 2.8.11, CSRF is possible on the Assignment plugin admin page, however an exploit is unlikely to benefit anybody and can easily be reversed (CVE-2016-2157).

In Moodle before 2.8.11, enumeration of course category details is possible without authentication (CVE-2016-2158).

In Moodle before 2.8.11, students were able to add assignment submissions after the due date through web service, via the external function mod_assign_save_submission (CVE-2016-2159).

In Moodle before 2.8.11, when following external links that were added with the _blank target, a referer header would be added (CVE-2016-2190).

Record: MGASA-2016-0122
Updated: 2026-11-02

Affected products

moodle

Affected packages

Affected packages
Package	Affected	Fixed
`moodle/moodle` Packagist	2.8.0 up to 2.8.11	2.8.11
`moodle/moodle` Packagist	2.9.0 up to 2.9.5	2.9.5
`moodle/moodle` Packagist	3.0.0 up to 3.0.3	3.0.3
`moodle/moodle` Packagist	2.8.0 up to 2.8.11, plus listed versions v2.8.0v2.8.1v2.8.10v2.8.2v2.8.3 Show 6 moreShow less v2.8.4v2.8.5v2.8.6v2.8.7v2.8.8v2.8.9	2.8.11
`moodle/moodle` Packagist	2.9.0 up to 2.9.5, plus listed versions v2.9.0v2.9.1v2.9.2v2.9.3v2.9.4	2.9.5
`moodle/moodle` Packagist	3.0.0 up to 3.0.3, plus listed versions v3.0.0v3.0.1v3.0.2	3.0.3
`moodle` Mageia:5	before 2.8.11-1.mga5	2.8.11-1.mga5
`moodle` Ubuntu:16.04:LTS	before 3.0.3+dfsg-0ubuntu1, plus listed versions 2.7.9+dfsg-12.7.10+dfsg-12.7.11+dfsg-12.7.11+dfsg-22.7.12+dfsg-1	3.0.3+dfsg-0ubuntu1
`moodle` Ubuntu:18.04:LTS	before 3.0.3+dfsg-0ubuntu1	3.0.3+dfsg-0ubuntu1

History

History
When	Changed	Sources
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, GitHub Advisories, NVD, OSV

References

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