CKeditor5 up to 45.2.1/46.0.2 cross site scripting

Summaryinfo

A vulnerability classified as problematic was found in CKeditor5 up to 45.2.1/46.0.2. Affected by this vulnerability is an unknown functionality. The manipulation results in cross site scripting. This vulnerability is identified as CVE-2025-58064. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in CKeditor5 up to 45.2.1/46.0.2. It has been classified as problematic. Affected is an unknown function. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. ckeditor5 and ckeditor5-clipboard versions 46.0.0 through 46.0.2 and 44.2.0 through 45.2.1 contain a Cross-Site Scripting (XSS) vulnerability. Ability to exploit could be triggered by a specific user action (leading to unauthorized JavaScript code execution) if the attacker managed to insert a malicious content into the editor, which might happen with a very specific editor configuration. This vulnerability affects installations where the editor configuration meets one of the following criteria: the HTML embed plugin is enabled, or there is a custom plugin introducing an editable element where view RawElement is enabled. This issue is fixed in versions 45.2.2 and 46.0.3 of both ckeditor5 and ckeditor5-clipboard.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-58064 since 08/22/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 45.2.2 or 46.0.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-26646). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• CKeditor5

Version

• 45.2.0
• 45.2.1
• 46.0.0
• 46.0.1
• 46.0.2

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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