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MEDIUM severity

Drupal Core Cross-site scripting vulnerabilityGHSA-qf2g-mrrx-rr5p

MEDIUM

GHSA-qf2g-mrrx-rr5p is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in drupal/core. A fix is available for drupal/core — see the affected versions and patch details below.

Also known asBIT-drupal-2020-13688CVE-2020-13688DRUPAL-CORE-2020-009
Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs52th percentile — riskier than 52% of all scored CVEsHighest risk
0.00%0.39%0.77%1.16%0.3%0.7%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

3 pkgs affected
🐘drupal/core🐘drupal/core🐘drupal/core

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Cross-site scripting vulnerability in l Drupal Core allows an attacker could 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 Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistdrupal/core≥ 8.8.0&&< 8.8.108.8.10composer require drupal/core:^8.8.10
🐘Packagistdrupal/core≥ 8.9.0&&< 8.9.68.9.6composer require drupal/core:^8.9.6
🐘Packagistdrupal/core≥ 9.0.0&&< 9.0.69.0.6composer require drupal/core:^9.0.6

Affected Products

1 product · 3 configurations
Application
drupaldrupal
≥ 9.0.0 && < 9.0.6
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for drupal/core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update drupal/core to 8.8.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qf2g-mrrx-rr5p is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

Cross-site scripting vulnerability in Drupal Core allows an attacker could 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.
O3 Security · Impact-Aware SCA

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Drupal Core Cross-site scripting vulnerability (Medium 6.1)