CVE-2020-13672: Drupal core's sanitization API fails to properly filter cross-site scripting under certain circumstances. Not all sites

medium Affects drupal/core, drupal/drupal. Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

Drupal core's sanitization API fails to properly filter cross-site scripting under certain circumstances. Not all sites

Package
drupal/core Composer
Affected versions
>= 8.0.0 <8.9.14 or >= 9.0.0 <9.0.12 or >=9.1.0 <9.1.7 or >=7.0.0 and <7.80 or >=8.0.0 and <8.9.14 or >=9.0.0 and <9.0.12 or >=9.1.0 and <9.1.7 or >=8.0.0 and <8.1.0 or >=8.1.0 and <8.2.0 or >=8.2.0 and <8.3.0 or >=8.3.0 and <8.4.0 or >=8.4.0 and <8.5.0 or >=8.5.0 and <8.6.0 or >=8.6.0 and <8.7.0 or >=8.7.0 and <8.8.0 or >=8.8.0 and <8.9.0 or >=8.9.0 and <8.9.14
Fixed in
8.9.14, 9.0.12, 9.1.7, 7.80
Severity
medium  CVSS 6.1
Exploitation
not on CISA KEV · EPSS 1% (52.1th percentile)
Published
2021-04-21
Source
osv.dev

References

Drupal core Cross-site Scripting (XSS) vulnerability

Package
drupal/drupal Composer
Affected versions
>=7.0.0 and <7.80 or >=8.0.0 and <8.9.14 or >=9.0.0 and <9.0.12 or >=9.1.0 and <9.1.7 or >=8.0.0 and <8.1.0 or >=8.1.0 and <8.2.0 or >=8.2.0 and <8.3.0 or >=8.3.0 and <8.4.0 or >=8.4.0 and <8.5.0 or >=8.5.0 and <8.6.0 or >=8.6.0 and <8.7.0 or >=8.7.0 and <8.8.0 or >=8.8.0 and <8.9.0 or >=8.9.0 and <8.9.14
Fixed in
7.80, 8.9.14, 9.0.12, 9.1.7
Severity
medium  CVSS 6.1
Exploitation
not on CISA KEV · EPSS 1% (52.1th percentile)
Published
2022-02-12
Source
osv.dev

References

CWE-79
NVD recorddrupal/core advisoriesdrupal/drupal advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden deps composer.lock

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

Install docs   How findings are ranked

Related advisories