Cross-site Scripting in Drupal Core
Access Bypass vulnerability in Drupal Core allows for an attacker to leverage the way that HTML is rendered for affected forms in order to exploit the vulnerability. This issue affects: Drupal Core 8.8.x versions prior to 8.8.10; 8.9.x versions prior to 8.9.6; 9.0.x versions prior to 9.0.6.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | drupal/core | >= 8.0.0, < 8.8.10, >= 8.9.0, < 8.9.6, >= 9.0.0, < 9.0.6 | 8.8.10, 8.9.6, 9.0.6 |
| Composer package | drupal/drupal | >= 8.0.0, < 8.8.10, >= 8.9.0, < 8.9.6, >= 9.0.0, < 9.0.6 | 8.8.10, 8.9.6, 9.0.6 |
| Drupal (core) | drupal/core | >= 8.0.0, < 8.8.10, >= 8.9.0, < 8.9.6, >= 9.0.0, < 9.0.6, >= 8.0.0, < 8.8.10, >= 8.9.0, < 8.9.6, >= 9.0.0, < 9.0.6 | 8.8.10, 8.9.6, 9.0.6 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-13668
- https://github.com/drupal/core/commit/3184fa4b2f3b65b44884b5e858cdc7794d34b4c8
- https://github.com/drupal/core/commit/58330ba58d1ac6f1a0a549e8dbde8a3e094bf4fb
- https://github.com/drupal/core/commit/d4be028d81fb6b067513d788b60c3e6fc8fbd0a2
- https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13668.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13668.yaml
- https://github.com/drupal/core
- https://www.drupal.org/sa-core-2020-009
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-79- Platform
- Composer, Drupal
- Package
drupal/core, drupal/drupal- Disclosed
- 12.02.2022
- Updated
- 11.10.2026 11:17
Sources and licenses
OSV / GitHub Advisory Database - GHSA-m6q5-wv4x-fv6h - CC BY 4.0
Vulnerability history: drupal/core
All published vulnerabilities of this package (Drupal (core)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 165
- First → latest
- 02.2018 09.2026
- Without a fix
- 3
- Exploited in attacks
- 5
Severity breakdown
- Critical 17
- High 44
- Medium 72
- Low 6
- Unrated 26
Disclosures per year
- 2018: 4
- 2019: 14
- 2020: 12
- 2021: 11
- 2022: 61
- 2023: 6
- 2024: 36
- 2025: 8
- 2026: 13
-
Cross-site Scripting in Drupal Core this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.