Updated CKEditor 4 library to the latest 4.24.0-lts. This version of the editor includes important security patches. From now on, all versions below 4.24.0-lts can no longer be considered as secure.
Security Updates:
Cross-site scripting (XSS) vulnerability caused by incorrect CDATA detection reported by Michal Frýba, ALEF NULA.
Issue summary: The vulnerability allowed to inject malformed HTML content bypassing Advanced Content Filtering mechanism, which could result in executing JavaScript code. See GHA for more details.
Cross-site scripting (XSS) vulnerability in AJAX sample reported by Rafael Pedrero, see INCIBE report.
Issue summary: The vulnerability allowed to execute JavaScript code by abusing the AJAX sample. See GHA for more details.
Cross-site scripting (XSS) vulnerability in samples with enabled the preview feature reported by Marcin Wyczechowski & Michał Majchrowicz, AFINE Team.
Issue summary: The vulnerability allowed to execute JavaScript code by abusing the misconfigured preview feature. See GHA for more details.
If you use the CKEditor LTS module v1.0.0, upgrade to v1.0.1