XSS in Moodle

CVE-2021-20183

It was found in Moodle before version 3.10.1 that some search inputs were vulnerable to reflected XSS due to insufficient escaping of search queries.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (53.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Moodle
N/a Moodle — versions moodle 3.10.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

secalert@redhat.com (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-20183?: CVE-2021-20183 is a medium-severity vulnerability in Moodle, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-01-28.
How severe is CVE-2021-20183?: Medium severity. CVSS v3 base score is 5.4 out of 10.