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TinyMCE Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2023-45819 - Vulnerability Database
TinyMCE

TinyMCE Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2023-45819

Medium
Reference: CVE-2023-45819
NVD Link: https://nvd.nist.gov/vuln/detail/CVE-2023-45819
Title: TinyMCE Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability
Overview:

TinyMCE is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in TinyMCEs Notification Manager API. The vulnerability exploits TinyMCE39s unfiltered notification system which is used in error handling. The conditions for this exploit requires carefully crafted malicious content to have been inserted into the editor and a notification to have been triggered. When a notification was opened the HTML within the text argument was displayed unfiltered in the notification. The vulnerability allowed arbitrary JavaScript execution when an notification presented in the TinyMCE UI for the current user. This issue could also be exploited by any integration which uses a TinyMCE notification to display unfiltered HTML content. This vulnerability has been patched in TinyMCE 5.10.8 and TinyMCE 6.7.1 by ensuring that the HTML displayed in the notification is sanitized preventing the exploit. Users are advised to upgrade. There are no known workarounds for this vulnerability.