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CVE-2021-41164

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

MEDIUM
5.4
CVSS Score
Published: November 17, 2021 at 12:00 AM UTC
Updated: August 25, 2026 at 04:28 PM UTC
11 products affected across 4 vendorsFedoraDrupalPeopleSoft Enterprise PeopleTools

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Severity
MEDIUM5.4
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ckeditor· Ckeditordrupal
95%
4.0 ≤ v < 4.17.0
Affected range stops below 4.17.0, so it looks safe — our inference, not a vendor statement
Drupal· Drupaldrupal
95%
8.9.0 ≤ v < 8.9.209.1.0 ≤ v < 9.1.149.2.0 ≤ v < 9.2.9
Affected range stops below 8.9.20, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.1.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.2.9, so it looks safe — our inference, not a vendor statement
Fedora· Fedora Projectrpm
95%
3637
Agile Product Lifecycle Management· Oracledrupal
95%
9.3.6
Application Express· Oracledrupal
95%
v < 22.1
Affected range stops below 22.1, so it looks safe — our inference, not a vendor statement
Banking Apis· Oracledrupal
95%
18.1 ≤ v ≤ 18.319.119.220.121.1
Banking Digital Experience· Oracledrupal
95%
18.1 ≤ v ≤ 18.319.119.220.121.1
Commerce Guided Search· Oracledrupal
95%
11.3.2
PeopleSoft Enterprise PeopleTools· Oracledrupal
95%
8.588.59
Webcenter Portal· Oracledrupal
95%
12.2.1.3.012.2.1.4.0

References (8)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-417
Third Party Advisory
Source: [email protected]
https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-pvmx-g8h5-cprj
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VR76VBN5GW5QUBJFHVXRX36UZ6YTCMW6/
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WOZGMCYDB2OKKULFXZKM6V7JJW4ZZHJP/
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://www.drupal.org/sa-core-2021-011
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpuapr2022.html
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpujan2022.html
x_refsource_MISCNot Applicable
Source: [email protected]
https://www.oracle.com/security-alerts/cpujul2022.html

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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