What is CVE-2018-1134?

CVE-2018-1134 is a medium-severity vulnerability in Moodle, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2018-05-25.

How severe is CVE-2018-1134?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2018-1134 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Privilege escalation in Moodle

CVE-2018-1134

An issue was discovered in Moodle 3.x. Students who submitted assignments and exported them to portfolios can download any stored Moodle file by changing the download URL.

Vulnerability class: Privilege Escalation

Published 2018-05-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (61.9th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Moodle
Moodle 3.x Unknown — versions Moodle 3.x unknown

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

Public proof-of-concept exploits

jev770/badmoodle-scan

References

moodle.org/mod/forum/discuss.php (Patch, Vendor Advisory)
www.securityfocus.com/bid/104307 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-1134?: CVE-2018-1134 is a medium-severity vulnerability in Moodle, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2018-05-25.
How severe is CVE-2018-1134?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2018-1134 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.