CVE-2023-4771 Cross-Site Scripting vulnerability in CKSource CKEditor
An attacker can inject malicious JavaScript via a sample file to steal authorized user information in CKEditor.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-4771?
CVE-2023-4771 is a medium-severity cross-site scripting vulnerability in CKSource CKEditor, published on 16 Nov 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A Cross-Site scripting vulnerability has been found in CKSource CKEditor affecting versions 4.15.1 and earlier. An attacker could send malicious javascript code through the /ckeditor/samples/old/ajax.html file and retrieve an authorized user's information.
Weakness: CWE-79
Which versions are affected by CVE-2023-4771?
2 open source packages ship an affected version, including ckeditor4. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ckeditor4 npm | All versions | 4.24.0-lts |
ckeditor4 npm | All versions | 4.24.0-lts |
Products include Cksource Ckeditor.
How do I fix CVE-2023-4771?
Upgrade ckeditor4 to 4.24.0-lts or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2023-4771 being exploited?
There is no known exploitation of CVE-2023-4771 in the wild and no public exploit code.
Other vulnerabilities in CKSource CKEditor
Sources
Also known as DEBIAN-CVE-2023-4771, GHSA-wh5w-82f3-wrxh, UBUNTU-CVE-2023-4771.