Vulnerability · Published Aug 25, 2026 · Assigned by drupal
CVE-2026-55805Drupal core - Moderately critical - Cross-site scripting - SA-CORE-2026-012
Medium 5.4
In plain English
A medium-severity cross-site scripting in Drupal core from Drupal. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Drupal core allows Stored XSS. This issue affects Drupal core versions: from 0.0.0 to 10.6.13, from 11.3.0 to 11.3.14, from 11.4.0 to 11.4.4, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*, from 0.0.0 to 11.2.*.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | drupal/core | 10.6.13, 11.1.0, 11.2.0, 11.3.0, 11.3.14, 11.4.4 | DRUPAL-CORE-2026-012 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Drupal | Drupal core | 0.0.0 – before 10.6.1311.3.0 – before 11.3.1411.4.0 – before 11.4.40.0.0 – before 11.0.*0.0.0 – before 11.1.*0.0.0 – before 11.2.* |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N