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Not in CISA KEV
MEDIUM severity

CVE-2020-13669

MEDIUM

CVE-2020-13669 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in drupal/core. O3 Security confirms whether CVE-2020-13669 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Drupal core Cross-site Scripting (XSS) vulnerability in ckeditor

Also known asBIT-drupal-2020-13669DRUPAL-CORE-2020-010GHSA-c533-c843-67h8
Published
Feb 11, 2022
Updated
Jul 8, 2026
Affected
6 pkgs
Patched
6 / 6
Exploits
None indexed
Exploitation data as of Jul 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

6 pkgs affected
🐘drupal/core🐘drupal/core🐘drupal/core🐘drupal/drupal🐘drupal/drupal🐘drupal/drupal

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 (XSS) vulnerability in ckeditor of Drupal Core allows attacker to inject XSS. 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

6 total 6 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistdrupal/core8.0.0&&< 8.8.108.8.10
🐘Packagistdrupal/core8.9.0&&< 8.9.68.9.6
🐘Packagistdrupal/core9.0.0&&< 9.0.69.0.6
🐘Packagistdrupal/drupal8.0.0&&< 8.8.108.8.10
🐘Packagistdrupal/drupal8.9.0&&< 8.9.68.9.6
🐘Packagistdrupal/drupal9.0.0&&< 9.0.69.0.6

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. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  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 CVE-2020-13669 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether CVE-2020-13669 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to CVE-2020-13669. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Cross-site Scripting (XSS) vulnerability in ckeditor of Drupal Core allows attacker to inject XSS. 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

Is CVE-2020-13669 in your dependencies?

O3 detects CVE-2020-13669 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

CVE-2020-13669: drupal/core Cross-Site… | O3 Security