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Fencer Vulns
medium 6.1

CVE-2020-13672 json

Drupal core Cross-site Scripting (XSS) vulnerability

published 2021-04-21 5 y ago modified 2026-09-19 50 d ago also BIT-drupal-2020-13672 , DRUPAL-CORE-2021-002 , EUVD-2022-0793 , GHSA-3m36-mjwj-352c

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

Cross-site Scripting (XSS) vulnerability in Drupal core's sanitization API fails to properly filter cross-site scripting under certain circumstances. This issue affects: Drupal Core 9.1.x versions prior to 9.1.7; 9.0.x versions prior to 9.0.12; 8.9.x versions prior to 8.9.14; 7.x versions prior to 7.80.

Patch / fix

  • packagist drupal/core 7.80, 8.9.14, 9.0.12, 9.1.7
  • packagist drupal/drupal 7.80, 8.9.14, 9.0.12, 9.1.7
  • bitnami drupal 7.80.0, 8.9.14, 9.0.12, 9.1.7
  • Drupal Core 7.80, 8.9.14, 9.0.12, 9.1.7
  • drupal7 Alpine 3.20, Alpine 3.19, Alpine 3.18 +5 more 7.81-r0

alpine advisories ALPINE-CVE-2020-13672

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • drupal Arch Linux 9.1.7-1

arch linux advisories AVG-1463

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-13672 updated cvss 8.8

drupal: Drupal core's sanitization API fails to properly filter cross-site scripting (XSS)

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 2.6 AV:N/AC:H/Au:N/C:N/I:P/A:N
OSV 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist drupal/core
>=7.0.0, <7.80
>=8.0.0, <8.9.14
>=9.0.0, <9.0.12
>=9.1.0, <9.1.7
7.80
8.9.14
9.0.12
9.1.7
packagist drupal/drupal
>=7.0.0, <7.80
>=8.0.0, <8.9.14
>=9.0.0, <9.0.12
>=9.1.0, <9.1.7
7.80
8.9.14
9.0.12
9.1.7
bitnami drupal
<7.80.0
>=8.9.0, <8.9.14
>=9.0.0, <9.0.12
>=9.1.0, <9.1.7
7.80.0
8.9.14
9.0.12
9.1.7

Affected products

  • Drupal Core

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.