What is CVE-2016-9186?

CVE-2016-9186 is a high-severity vulnerability in Moodle, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2016-11-04.

How severe is CVE-2016-9186?

High severity. CVSS v3 base score is 8.8 out of 10.

Arbitrary file upload in Moodle

CVE-2016-9186

Unrestricted file upload vulnerability in the "legacy course files" and "file manager" modules in Moodle 3.1.2 allows remote authenticated users to execute arbitrary code by uploading a file with an executable extension, and then accessing it via unspecified vectors.

Vulnerability class: Unrestricted File Upload

Published 2016-11-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.038 (89.7th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.038 · newest: 0.038 · change: 0.000

Affected products

Moodle

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

www.securityfocus.com/bid/94190 (VDB Entry, Third Party Advisory, vdb-entry)
packetstormsecurity.com/files/139466/Moodle-CMS-3.1.2-Cross-Site-Scripting-File… (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2016-9186?: CVE-2016-9186 is a high-severity vulnerability in Moodle, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2016-11-04.
How severe is CVE-2016-9186?: High severity. CVSS v3 base score is 8.8 out of 10.