CVE-2026-15917: Drupal Core

Medium severity, CVSS 4.7. EPSS: 0.1% chance of exploitation in the next 30 days.

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 versions: from 11.3.0 to 11.3.14, from 11.4.0 to 11.4.4, from 0.0.0 to 11.2.*.

Affected products

• Drupal Drupal Core: from 11.3.0, before 11.3.14 (fixed in 11.3.14); from 11.4.0, before 11.4.4 (fixed in 11.4.4); from 0.0.0, before 11.3 (fixed in 11.3)

Published 2026-08-25. Last modified 2026-08-28.