Cross-Site Scripting (XSS) in Drupal Core

Publication date: 2026-05-19

Last updated on: 2026-05-20

Assigner: Drupal.org

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-19

Last Modified

2026-05-20

Generated

2026-06-30

AI Q&A

2026-05-20

EPSS Evaluated

2026-06-28

NVD

CVE-2026-6365

EUVD

EUVD-2026-31000

Affected Vendors & Products

Vendor	Product	Version / Range
drupal	drupal	From 11.3.0 (inc) to 11.3.7 (exc)
drupal	drupal	From 10.6.0 (inc) to 10.6.7 (exc)
drupal	drupal	From 11.0.0 (inc) to 11.2.11 (exc)
drupal	drupal	From 8.0.0 (inc) to 10.5.9 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a Cross-Site Scripting (XSS) issue in the Drupal core. It occurs due to improper neutralization of input during web page generation, which means that malicious scripts can be injected into web pages generated by Drupal.

Impact Analysis

The vulnerability can allow attackers to execute malicious scripts in the context of the affected website. This can lead to unauthorized actions such as stealing user session cookies, defacing websites, redirecting users to malicious sites, or performing actions on behalf of users without their consent.

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