What is CVE-2016-8644?

CVE-2016-8644 is a medium-severity vulnerability in Moodle, classified under CWE-264. CVSS score: 5.3/10. Published 2017-01-20.

How severe is CVE-2016-8644?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Moodle

CVE-2016-8644

In Moodle 2.x and 3.x, the capability to view course notes is checked in the wrong context.

Published 2017-01-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.012 (66.4th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Moodle — versions 2.8.0, 2.8.1, 2.8.2
Moodle 2.x And 3.x — versions Moodle 2.x and 3.x

Weakness classification (CWE)

CWE-264

References

moodle.org/mod/forum/discuss.php (Patch, Vendor Advisory)
www.securityfocus.com/bid/94458 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2016-8644?: CVE-2016-8644 is a medium-severity vulnerability in Moodle, classified under CWE-264. CVSS score: 5.3/10. Published 2017-01-20.
How severe is CVE-2016-8644?: Medium severity. CVSS v3 base score is 5.3 out of 10.