XSS in Moodle

CVE-2020-1691

In Moodle 3.8, messages required extra sanitizing before updating the conversation overview, to prevent the risk of stored cross-site scripting.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (42.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Moodle — versions 3.8.0
N/a Moodle — versions 3.8

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2020-1691?: CVE-2020-1691 is a medium-severity vulnerability in Moodle, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-08-05.
How severe is CVE-2020-1691?: Medium severity. CVSS v3 base score is 5.4 out of 10.