Improper input validation in Moodle

CVE-2018-10891

A flaw was found in moodle before versions 3.5.1, 3.4.4, 3.3.7, 3.1.13. When a quiz question bank is imported, it was possible for the question preview that is displayed to execute JavaScript that is written into the question bank.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.021 (80.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-10891?
CVE-2018-10891 is a high-severity vulnerability in Moodle, classified under Improper Input Validation. CVSS score: 7.3/10. Published 2018-07-10.
How severe is CVE-2018-10891?
High severity. CVSS v3 base score is 7.3 out of 10.
Is CVE-2018-10891 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.