Moodle Unrestricted file upload vulnerability

published 2016-11-04 10 y ago modified 2026-06-17 4 mo ago also GHSA-58fm-v4pr-jh8p , EUVD-2022-2536

cvss: 8.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 4.0%; EPSS 4.0% chance of exploitation in 30 days, percentile 90%
public exploits: 0; none known

Unrestricted file upload vulnerability in the double extension support in the "image" module 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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-9187 updated 2026-01-13

moodle: Multiple vulnerabilities in 3.1.2 and before

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.97% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

packetstormsecurity.com https://packetstormsecurity.com/files/139466/Moodle-CMS-3.1.2-Cross-Site-Scripting-File-Upload.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
packagist	moodle/moodle	>=2.0.1, <=3.2.1	no fix listed

Classification

Weakness

CWE-434 Unrestricted Upload of File with Dangerous Type

References

packetstormsecurity.com /files/139466/Moodle-CMS-3.1.2-Cross-Site-Scripting-File-Upload.html
web, exploit, third-party-advisory, vdb-entry
securityfocus.com /bid/94191
vdb-entry, web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2016-9187
advisory
github.com /moodle/moodle
package

Sources

CVE List CVE-2016-9187
GitHub Advisory GHSA-58fm-v4pr-jh8p
NVD CVE-2016-9187

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary