What is CVE-2018-1082?

CVE-2018-1082 is a high-severity vulnerability in Moodle, classified under Improper Authorization. CVSS score: 8.1/10. Published 2018-04-04.

How severe is CVE-2018-1082?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2018-1082 known to be exploited?

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

Auth bypass in Moodle

CVE-2018-1082

A flaw was found in Moodle 3.4 to 3.4.1, and 3.3 to 3.3.4. If a user account using OAuth2 authentication method was once confirmed but later suspended, the user could still login to the site.

Published 2018-04-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.020 (80.2th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.020 · change: -0.000

Affected products

Moodle
Red Hat, Inc. Moodle — versions 3.4 to 3.4.1, 3.3 to 3.3.4

Weakness classification (CWE)

Public proof-of-concept exploits

jev770/badmoodle-scan

References

git.moodle.org/gw (Patch)
www.securityfocus.com/bid/103725 (VDB Entry, Third Party Advisory, vdb-entry)
moodle.org/mod/forum/discuss.php (Vendor Advisory)

Frequently asked questions

What is CVE-2018-1082?: CVE-2018-1082 is a high-severity vulnerability in Moodle, classified under Improper Authorization. CVSS score: 8.1/10. Published 2018-04-04.
How severe is CVE-2018-1082?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2018-1082 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.