CVE-2026-6367: Drupal core - Moderately critical - Cross-site scripting - SA-CORE-2026-003

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-19 · updated 2026-07-24
Weakness: CWE-79

Description

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.

Affected products

Drupal: from 11.3.0 before 11.3.7 — fixed in 11.3.7

How to fix

Upgrade to a fixed version: Drupal 11.3.7. Check the vendor advisory for mitigations.

References

https://www.drupal.org/sa-core-2026-003

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