Summary
CKEditor 5 cross-site scripting (XSS) vulnerability in the clipboard package
For more information
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Impact
A Cross-Site Scripting (XSS) vulnerability has been discovered in the CKEditor 5 clipboard package. This vulnerability 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 only installations where the editor configuration meets one of the following criteria:
- HTML embed plugin is enabled
- Custom plugin introducing editable element which implements view
RawElementis enabled
Untrusted input is rendered as active markup in a victim's browser, which can run script in their session. Typical impact: session or credential theft, and actions taken as the user.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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The problem has been recognized and patched. The fix will be available in version 46.0.3 (and above), and explicitly in version 45.2.2.
Frequently Asked Questions
- What is CVE-2025-58064? CVE-2025-58064 is a low-severity cross-site scripting (XSS) vulnerability in ckeditor5 (npm), affecting versions >= 46.0.0, < 46.0.3. It is fixed in 46.0.3, 45.2.2. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
- Which packages are affected by CVE-2025-58064?
ckeditor5(npm) (versions >= 46.0.0, < 46.0.3)@ckeditor/ckeditor5-clipboard(npm) (versions >= 44.2.0, < 45.2.2)
- Is there a fix for CVE-2025-58064? Yes. CVE-2025-58064 is fixed in 46.0.3, 45.2.2. Upgrade to this version or later.
- Is CVE-2025-58064 exploitable, and should I be worried? Whether CVE-2025-58064 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2025-58064 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2025-58064?
- Upgrade
ckeditor5to 46.0.3 or later - Upgrade
@ckeditor/ckeditor5-clipboardto 45.2.2 or later - Upgrade
ckeditor5to 45.2.2 or later - Upgrade
@ckeditor/ckeditor5-clipboardto 46.0.3 or later
- Upgrade