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

Moderate
jacekbogdanski published GHSA-pvmx-g8h5-cprj Nov 17, 2021

Package

No package listed

Affected versions

< 4.17.0

Patched versions

4.17.0

Description

Affected packages

The vulnerability has been discovered in the Advanced Content Filter (ACF) module and may affect all plugins used by CKEditor 4.

Impact

A potential vulnerability has been discovered in CKEditor 4 Advanced Content Filter (ACF) core module. 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.

Patches

The problem has been recognized and patched. The fix will be available in version 4.17.0.

For more information

Email us at [email protected] if you have any questions or comments about this advisory.

Acknowledgements

The CKEditor 4 team would like to thank Maurice Dauer (laytonctf) for recognizing and reporting this vulnerability.

Severity

Moderate

CVE ID

CVE-2021-41164

Weaknesses

No CWEs