Auth bypass in Moodle

CVE-2019-3848

A vulnerability was found in moodle before versions 3.6.3, 3.5.5 and 3.4.8. Permissions were not correctly checked before loading event information into the calendar's edit event modal popup, so logged in non-guest users could view unauthorised calendar events. (Note: It was read-only access, users could not edit the events.)

Vulnerability class: Broken Access Control

EPSS: 0.009 (54.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2019-3848?
CVE-2019-3848 is a medium-severity vulnerability in Moodle, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2019-03-26.
How severe is CVE-2019-3848?
Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2019-3848 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.