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CVE-2016-2151

17
FAUCET Score

CVE-2016-2151 is an information disclosure vulnerability affecting Moodle versions through 2.6.11, 2.7.x before 2.7.13, 2.8.x before 2.8.11, 2.9.x before 2.9.5, and 3.0.x before 3.0.3. It allows remote authenticated users with a teacher role to discover student email addresses by leveraging the moodle/course:viewhiddenuserfields capability and viewing the Participants list. Rated as Medium severity (CVSS 4.3), this vulnerability has a low attack complexity and requires authentication, leading to a limited impact of information disclosure (CWE-200). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.11CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
2.7.0CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.7.0:*:*:*:*:*:*:*
2.7.1CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.7.1:*:*:*:*:*:*:*
2.7.2CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.7.2:*:*:*:*:*:*:*
2.7.3CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.7.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.58%
Probability of exploitation in next 30 days
EPSS Percentile
72.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0158 is in the 86th percentile among its peer group of 21,974 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 2.7.13
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 2.8.11
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 2.9.5
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.0.3

Vendor Advisories (1)

composerGHSA-r3fc-hx6q-g6cqmedium

Moodle allows attackers to discover student e-mail addresses

May 13, 2022

References

git.moodle.org / gw
moodle.org / mod/forum/discuss.php
Vendor Advisory
openwall.com / lists/oss-security/2016/03/21/1
securitytracker.com / id/1035333