Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2018-14631

22
FAUCET Score

CVE-2018-14631 describes a reflected Cross-Site Scripting (XSS) vulnerability in Moodle versions prior to 3.5.2, 3.4.5, and 3.3.8. The Boost theme's blog search functionality inadequately filtered the GET parameter, allowing malicious JavaScript to be injected into the breadcrumb navigation if a user clicked a crafted link. Rated Medium severity (CVSS 6.1), this vulnerability requires user interaction (UI:R) and could lead to information disclosure (C:L) and integrity compromise (I:L). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.3.0, < 3.3.8CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
>= 3.4.0, < 3.4.5CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
>= 3.5.0, < 3.5.2CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.80%
Probability of exploitation in next 30 days
EPSS Percentile
76.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0180 is in the 88th percentile among its peer group of 26,234 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: 3.3.8
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.4.5
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.5.2
redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-gqrp-qhv8-phrvmedium

Moodle Cross-site Scripting

May 13, 2022

References

git.moodle.org / gw
PatchVendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
moodle.org / mod/forum/discuss.php
PatchVendor Advisory
securityfocus.com / bid/105371
Third Party AdvisoryVDB Entry