CVE-2019-3848

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-03-26 · updated 2026-06-17
Weakness: CWE-863

Description

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.)

Affected products

Moodle: before 3.4.8; from 3.5.0 before 3.5.5; from 3.6.0 before 3.6.3 — fixed in 3.4.8, 3.5.5, 3.6.3

How to fix

Upgrade to a fixed version: Moodle 3.4.8, 3.5.5, 3.6.3. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3848
https://moodle.org/mod/forum/discuss.php?d=384011#p1547743
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3848
https://moodle.org/mod/forum/discuss.php?d=384011#p1547743

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