What is CVE-2018-1135?

CVE-2018-1135 is a medium-severity vulnerability in Moodle, classified under Information Disclosure. CVSS score: 6.5/10. Published 2018-05-25.

How severe is CVE-2018-1135?

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

Is CVE-2018-1135 known to be exploited?

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

Information disclosure in Moodle

CVE-2018-1135

An issue was discovered in Moodle 3.x. Students who posted on forums and exported the posts to portfolios can download any stored Moodle file by changing the download URL.

Vulnerability class: Information Disclosure

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: 0.012 (66.7th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.7% 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
Moodle 3.x Unknown — versions Moodle 3.x unknown

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

jev770/badmoodle-scan

References

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

Frequently asked questions

What is CVE-2018-1135?: CVE-2018-1135 is a medium-severity vulnerability in Moodle, classified under Information Disclosure. CVSS score: 6.5/10. Published 2018-05-25.
How severe is CVE-2018-1135?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2018-1135 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.