Cross-Site Scripting (XSS) in Drupal Core

Publication date: 2026-07-10

Last updated on: 2026-07-10

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 versions: from 0.0.0 to 10.5.12, from 10.6.0 to 10.6.11, from 11.2.0 to 11.2.14, from 11.3.0 to 11.3.12, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*.

CVSS Scores

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Meta Information

Published

2026-07-10

Last Modified

2026-07-10

Generated

2026-07-11

AI Q&A

2026-07-11

EPSS Evaluated

N/A

NVD

CVE-2026-55808

EUVD

EUVD-2026-43085

Affected Vendors & Products

Vendor	Product	Version / Range
drupal	drupal_core	From 0.0.0 (inc) to 10.5.12 (inc)
drupal	drupal_core	From 10.6.0 (inc) to 10.6.11 (inc)
drupal	drupal_core	From 11.2.0 (inc) to 11.2.14 (inc)
drupal	drupal_core	From 11.3.0 (inc) to 11.3.12 (inc)
drupal	drupal_core	From 0.0.0 (inc) to 11.0.* (inc)
drupal	drupal_core	From 0.0.0 (inc) to 11.1.* (inc)

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 Drupal core. It occurs because the software does not properly neutralize input during web page generation, allowing attackers to inject malicious scripts into web pages viewed by other users.

Impact Analysis

The vulnerability can allow attackers to execute malicious scripts in the context of the affected website, potentially leading to theft of user credentials, session hijacking, defacement of the website, or distribution of malware to users.

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