What is CVE-2026-6367?

CVE-2026-6367 is a medium-severity vulnerability in Drupal, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-05-19.

How severe is CVE-2026-6367?

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

XSS in Drupal

CVE-2026-6367

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Drupal core allows Cross-Site Scripting (XSS). This issue affects Drupal core: from 11.3.0 before 11.3.7.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (9.9th 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 11.3.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

mlhess@drupal.org (Vendor Advisory)

Frequently asked questions

What is CVE-2026-6367?: CVE-2026-6367 is a medium-severity vulnerability in Drupal, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-05-19.
How severe is CVE-2026-6367?: Medium severity. CVSS v3 base score is 6.1 out of 10.