CVE-2021-41164

Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML

HIGH 8.2

At a glance

Source: NVD
EPSS: EPSS 1.35 % · percentile 71 (2026-10-28)
State: PUBLISHED
Published: 2021-11-17 00:00 UTC
Updated: 2024-08-04 02:59 UTC
Assigner: GitHub_M
NVD status: Modified

Description

CKEditor4 is an open source WYSIWYG HTML editor. In affected versions a vulnerability has been discovered in the Advanced Content Filter (ACF) module and may affect all plugins used by CKEditor 4. The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0. The problem has been recognized and patched. The fix will be available in version 4.17.0.

Weaknesses (CWE)

CWE-79 — Cross-site Scripting (XSS)

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 8.2	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L	GitHub_M
CVSS 3.1	HIGH 8.2	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L	NVD · security-advisories@github.com (Secondary)
CVSS 3.1	MEDIUM 5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N	NVD · nvd@nist.gov (Primary)
CVSS 2.0	LOW 3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N	NVD · nvd@nist.gov (Primary)

Advisories

GHSA-pvmx-g8h5-cprj — Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML

European references

ENISA EUVD · EUVD-2021-2375
GCVE · GCVE-0-2021-41164

CERT-FR advisories

CERTFR-2024-AVI-0992 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2021-AVI-883 — Multiples vulnérabilités dans Drupal · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:ckeditor:ckeditor:*:*:*:*:*:*:*:* ≥ 4.0 < 4.17.0
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* ≥ 8.9.0 < 8.9.20
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* ≥ 9.1.0 < 9.1.14
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* ≥ 9.2.0 < 9.2.9
cpe:2.3:a:oracle:banking_apis:*:*:*:*:*:*:*:* ≥ 18.1 ≤ 18.3
cpe:2.3:a:oracle:banking_apis:19.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_apis:19.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_apis:20.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_apis:21.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_digital_experience:*:*:*:*:*:*:*:* ≥ 18.1 ≤ 18.3
cpe:2.3:a:oracle:banking_digital_experience:19.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_digital_experience:19.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_digital_experience:20.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_digital_experience:21.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.6:*:*:*:*:*:*:*
cpe:2.3:a:oracle:application_express:*:*:*:*:*:*:*:* < 22.1
cpe:2.3:a:oracle:commerce_guided_search:11.3.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*
cpe:2.3:a:oracle:webcenter_portal:12.2.1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:webcenter_portal:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

Affected products

Product	Versions
ckeditor · ckeditor4	affected < 4.17.0

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD