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CVE-2016-5013

20
FAUCET Score

CVE-2016-5013 describes a text injection vulnerability in Moodle versions 2.x and 3.x, allowing attackers to inject arbitrary text into email headers. This medium-severity vulnerability (CVSS 5.4) has a low attack complexity and requires user interaction, primarily posing a risk of outbound spam due to the potential for information disclosure and integrity compromise. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.7.14CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
2.8.0CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.8.0:*:*:*:*:*:*:*
2.8.1CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.8.1:*:*:*:*:*:*:*
2.8.2CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.8.2:*:*:*:*:*:*:*
2.8.3CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.8.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.80%
Probability of exploitation in next 30 days
EPSS Percentile
52.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0080 is in the 61st percentile among its peer group of 26,219 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 0.1 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: 3.0.5
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 2.9.7
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 2.7.15
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.1.1

Vendor Advisories (1)

composerGHSA-2hh3-jmv8-5fmxmedium

Moodle Does Not Escape Characters In Email Headers

May 13, 2022

References

moodle.org / mod/forum/discuss.php
MitigationPatchVendor Advisory
securityfocus.com / bid/92040
Third Party AdvisoryVDB Entry