What is CVE-2019-10154?

CVE-2019-10154 is a high-severity vulnerability in Moodle, classified under Improper Authorization. CVSS score: 7.5/10. Published 2019-06-26.

How severe is CVE-2019-10154?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2019-10154 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-2019-10154

A flaw was found in Moodle before versions 3.7, 3.6.4. A web service fetching messages was not restricted to the current user's conversations.

Published 2019-06-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.013 (69.8th percentile), scored 2026-10-05.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Moodle — versions 3.7, 3.6.4

Weakness classification (CWE)

CWE-285 — Improper Authorization

Public proof-of-concept exploits

jev770/badmoodle-scan

References

bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
moodle.org/mod/forum/discuss.php (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2019-10154?: CVE-2019-10154 is a high-severity vulnerability in Moodle, classified under Improper Authorization. CVSS score: 7.5/10. Published 2019-06-26.
How severe is CVE-2019-10154?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2019-10154 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.