CVE-2018-14631

Severity: medium (CVSS 6.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-09-17 · updated 2026-06-17
Weakness: CWE-20

Description

moodle before versions 3.5.2, 3.4.5, 3.3.8 is vulnerable to a boost theme - blog search GET parameter insufficiently filtered. The breadcrumb navigation provided by Boost theme when displaying search results of a blog were insufficiently filtered, which could result in reflected XSS if a user followed a malicious link containing JavaScript in the search parameter.

Affected products

Moodle: from 3.3.0 before 3.3.8; from 3.4.0 before 3.4.5; from 3.5.0 before 3.5.2 — fixed in 3.3.8, 3.4.5, 3.5.2

How to fix

Upgrade to a fixed version: Moodle 3.3.8, 3.4.5, 3.5.2. Check the vendor advisory for mitigations.

References

http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-62857
http://www.securityfocus.com/bid/105371
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14631
https://moodle.org/mod/forum/discuss.php?d=376025
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-62857
http://www.securityfocus.com/bid/105371
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14631
https://moodle.org/mod/forum/discuss.php?d=376025

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