CVE-2018-16854

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-11-26 · updated 2026-06-17
Weakness: CWE-352

Description

A flaw was found in moodle versions 3.5 to 3.5.2, 3.4 to 3.4.5, 3.3 to 3.3.8, 3.1 to 3.1.14 and earlier. The login form is not protected by a token to prevent login cross-site request forgery. Fixed versions include 3.6, 3.5.3, 3.4.6, 3.3.9 and 3.1.15.

Affected products

Moodle: through 3.0.10; from 3.1.0 before 3.1.15; from 3.3.0 before 3.3.9; from 3.4.0 before 3.4.6; from 3.5.0 before 3.5.3 — fixed in 3.1.15, 3.3.9, 3.4.6, 3.5.3

How to fix

Upgrade to a fixed version: Moodle 3.1.15, 3.3.9, 3.4.6, 3.5.3. Check the vendor advisory for mitigations.

References

http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-63183
http://www.securityfocus.com/bid/106017
http://www.securitytracker.com/id/1042154
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16854
https://moodle.org/mod/forum/discuss.php?d=378731
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-63183
http://www.securityfocus.com/bid/106017
http://www.securitytracker.com/id/1042154
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16854
https://moodle.org/mod/forum/discuss.php?d=378731

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