What is CVE-2020-13666?

CVE-2020-13666 is a medium-severity vulnerability in Drupal, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-05.

How severe is CVE-2020-13666?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Drupal

CVE-2020-13666

Cross-site scripting vulnerability in Drupal Core. Drupal AJAX API does not disable JSONP by default, allowing for an XSS attack. This issue affects: Drupal Drupal Core 7.x versions prior to 7.73; 8.8.x versions prior to 8.8.10; 8.9.x versions prior to 8.9.6; 9.0.x versions prior to 9.0.6.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.029 (85.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Drupal
Drupal Core — versions 7.x, 8.8.x, 8.9.x

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

mlhess@drupal.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2020-13666?: CVE-2020-13666 is a medium-severity vulnerability in Drupal, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-05.
How severe is CVE-2020-13666?: Medium severity. CVSS v3 base score is 6.1 out of 10.