CVE-2026-6365: Drupal core - Critical - Cross-site scripting - SA-CORE-2026-001

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 8.0.0 before 10.5.9, from 10.6.0 before 10.6.7, from 11.0.0 before 11.2.11, from 11.3.0 before 11.3.7.

Affected products

Drupal: from 8.0.0 before 10.5.9; from 10.6.0 before 10.6.7; from 11.0.0 before 11.2.11; from 11.3.0 before 11.3.7 — fixed in 10.5.9, 10.6.7, 11.2.11, 11.3.7

How to fix

Upgrade to a fixed version: Drupal 10.5.9, 10.6.7, 11.2.11, 11.3.7. Check the vendor advisory for mitigations.

References

https://www.drupal.org/sa-core-2026-001

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