GHSA-pvmx-g8h5-cprj

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GHSA-pvmx-g8h5-cprj

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

Details: ### 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](https://twitter.com/laytonctf)) for recognizing and reporting this vulnerability.

References: https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-pvmx-g8h5-cprj, https://nvd.nist.gov/vuln/detail/CVE-2021-41164, https://github.com/ckeditor/ckeditor4, https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-417, https://lists.fedoraproject.org/archives/list/[email protected]/message/VR76VBN5GW5QUBJFHVXRX36UZ6YTCMW6, https://lists.fedoraproject.org/archives/list/[email protected]/message/WOZGMCYDB2OKKULFXZKM6V7JJW4ZZHJP, https://www.drupal.org/sa-core-2021-011, https://www.oracle.com/security-alerts/cpuapr2022.html, https://www.oracle.com/security-alerts/cpujan2022.html, https://www.oracle.com/security-alerts/cpujul2022.html